Swift Package Index

Build Information

Failed to build swift-nio-imap, reference main (0de989), with Swift 6.1 for Android on 16 Sep 2025 07:45:25 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/finestructure/spi-images:android-6.1-latest swift build --swift-sdk aarch64-unknown-linux-android24 2>&1

Build Log

  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
     |     `- note: add an explicit type annotation to silence this warning
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: error: invalid redeclaration of 'badOS'
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2438:13: error: cannot find 'isalpha' in scope
2436 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2437 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2438 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2439 |         }
2440 |         let string = try ParserLibrary.parseBufferAsUTF8(parsed)
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: error: invalid redeclaration of 'badOS'
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:118:20: error: cannot find 'isalnum' in scope
116 |             return true
117 |         default:
118 |             return isalnum(Int32(self)) != 0
    |                    `- error: cannot find 'isalnum' in scope
119 |         }
120 |     }
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:127:9: error: cannot find 'isalnum' in scope
125 |
126 |     var isAlphaNum: Bool {
127 |         isalnum(Int32(self)) != 0
    |         `- error: cannot find 'isalnum' in scope
128 |     }
129 |
[497/552] Compiling NIOIMAPCore GrammarParser+Response.swift
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Append.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
     |     `- note: add an explicit type annotation to silence this warning
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: error: invalid redeclaration of 'badOS'
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2438:13: error: cannot find 'isalpha' in scope
2436 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2437 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2438 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2439 |         }
2440 |         let string = try ParserLibrary.parseBufferAsUTF8(parsed)
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: error: invalid redeclaration of 'badOS'
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:118:20: error: cannot find 'isalnum' in scope
116 |             return true
117 |         default:
118 |             return isalnum(Int32(self)) != 0
    |                    `- error: cannot find 'isalnum' in scope
119 |         }
120 |     }
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:127:9: error: cannot find 'isalnum' in scope
125 |
126 |     var isAlphaNum: Bool {
127 |         isalnum(Int32(self)) != 0
    |         `- error: cannot find 'isalnum' in scope
128 |     }
129 |
[498/552] Compiling NIOIMAPCore GrammarParser+Search.swift
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Append.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
     |     `- note: add an explicit type annotation to silence this warning
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: error: invalid redeclaration of 'badOS'
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2438:13: error: cannot find 'isalpha' in scope
2436 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2437 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2438 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2439 |         }
2440 |         let string = try ParserLibrary.parseBufferAsUTF8(parsed)
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: error: invalid redeclaration of 'badOS'
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:118:20: error: cannot find 'isalnum' in scope
116 |             return true
117 |         default:
118 |             return isalnum(Int32(self)) != 0
    |                    `- error: cannot find 'isalnum' in scope
119 |         }
120 |     }
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:127:9: error: cannot find 'isalnum' in scope
125 |
126 |     var isAlphaNum: Bool {
127 |         isalnum(Int32(self)) != 0
    |         `- error: cannot find 'isalnum' in scope
128 |     }
129 |
[499/552] Compiling NIOIMAPCore GrammarParser+Sequence.swift
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Append.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
     |     `- note: add an explicit type annotation to silence this warning
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: error: invalid redeclaration of 'badOS'
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2438:13: error: cannot find 'isalpha' in scope
2436 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2437 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2438 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2439 |         }
2440 |         let string = try ParserLibrary.parseBufferAsUTF8(parsed)
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: error: invalid redeclaration of 'badOS'
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:118:20: error: cannot find 'isalnum' in scope
116 |             return true
117 |         default:
118 |             return isalnum(Int32(self)) != 0
    |                    `- error: cannot find 'isalnum' in scope
119 |         }
120 |     }
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:127:9: error: cannot find 'isalnum' in scope
125 |
126 |     var isAlphaNum: Bool {
127 |         isalnum(Int32(self)) != 0
    |         `- error: cannot find 'isalnum' in scope
128 |     }
129 |
[500/552] Compiling NIOIMAPCore GrammarParser+UID.swift
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Append.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
     |     `- note: add an explicit type annotation to silence this warning
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: error: invalid redeclaration of 'badOS'
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2438:13: error: cannot find 'isalpha' in scope
2436 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2437 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2438 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2439 |         }
2440 |         let string = try ParserLibrary.parseBufferAsUTF8(parsed)
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: error: invalid redeclaration of 'badOS'
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:118:20: error: cannot find 'isalnum' in scope
116 |             return true
117 |         default:
118 |             return isalnum(Int32(self)) != 0
    |                    `- error: cannot find 'isalnum' in scope
119 |         }
120 |     }
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:127:9: error: cannot find 'isalnum' in scope
125 |
126 |     var isAlphaNum: Bool {
127 |         isalnum(Int32(self)) != 0
    |         `- error: cannot find 'isalnum' in scope
128 |     }
129 |
[501/552] Compiling NIOIMAPCore GrammarParser.swift
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Append.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
     |     `- note: add an explicit type annotation to silence this warning
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: error: invalid redeclaration of 'badOS'
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2438:13: error: cannot find 'isalpha' in scope
2436 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2437 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2438 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2439 |         }
2440 |         let string = try ParserLibrary.parseBufferAsUTF8(parsed)
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: error: invalid redeclaration of 'badOS'
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:118:20: error: cannot find 'isalnum' in scope
116 |             return true
117 |         default:
118 |             return isalnum(Int32(self)) != 0
    |                    `- error: cannot find 'isalnum' in scope
119 |         }
120 |     }
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:127:9: error: cannot find 'isalnum' in scope
125 |
126 |     var isAlphaNum: Bool {
127 |         isalnum(Int32(self)) != 0
    |         `- error: cannot find 'isalnum' in scope
128 |     }
129 |
[502/552] Compiling NIOIMAPCore Parser.swift
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Append.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
     |     `- note: add an explicit type annotation to silence this warning
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: error: invalid redeclaration of 'badOS'
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2438:13: error: cannot find 'isalpha' in scope
2436 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2437 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2438 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2439 |         }
2440 |         let string = try ParserLibrary.parseBufferAsUTF8(parsed)
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: error: invalid redeclaration of 'badOS'
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:118:20: error: cannot find 'isalnum' in scope
116 |             return true
117 |         default:
118 |             return isalnum(Int32(self)) != 0
    |                    `- error: cannot find 'isalnum' in scope
119 |         }
120 |     }
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:127:9: error: cannot find 'isalnum' in scope
125 |
126 |     var isAlphaNum: Bool {
127 |         isalnum(Int32(self)) != 0
    |         `- error: cannot find 'isalnum' in scope
128 |     }
129 |
[503/552] Compiling NIOIMAPCore ParserLibrary.swift
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Append.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
     |     `- note: add an explicit type annotation to silence this warning
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: error: invalid redeclaration of 'badOS'
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2438:13: error: cannot find 'isalpha' in scope
2436 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2437 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2438 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2439 |         }
2440 |         let string = try ParserLibrary.parseBufferAsUTF8(parsed)
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: error: invalid redeclaration of 'badOS'
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:118:20: error: cannot find 'isalnum' in scope
116 |             return true
117 |         default:
118 |             return isalnum(Int32(self)) != 0
    |                    `- error: cannot find 'isalnum' in scope
119 |         }
120 |     }
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:127:9: error: cannot find 'isalnum' in scope
125 |
126 |     var isAlphaNum: Bool {
127 |         isalnum(Int32(self)) != 0
    |         `- error: cannot find 'isalnum' in scope
128 |     }
129 |
[504/552] Compiling NIOIMAPCore ResponseParser.swift
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Append.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
     |     `- note: add an explicit type annotation to silence this warning
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: error: invalid redeclaration of 'badOS'
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2438:13: error: cannot find 'isalpha' in scope
2436 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2437 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2438 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2439 |         }
2440 |         let string = try ParserLibrary.parseBufferAsUTF8(parsed)
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: error: invalid redeclaration of 'badOS'
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:118:20: error: cannot find 'isalnum' in scope
116 |             return true
117 |         default:
118 |             return isalnum(Int32(self)) != 0
    |                    `- error: cannot find 'isalnum' in scope
119 |         }
120 |     }
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:127:9: error: cannot find 'isalnum' in scope
125 |
126 |     var isAlphaNum: Bool {
127 |         isalnum(Int32(self)) != 0
    |         `- error: cannot find 'isalnum' in scope
128 |     }
129 |
[505/552] Compiling NIOIMAPCore SynchronizingLiteralParser.swift
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Append.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
     |     `- note: add an explicit type annotation to silence this warning
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: error: invalid redeclaration of 'badOS'
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2438:13: error: cannot find 'isalpha' in scope
2436 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2437 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2438 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2439 |         }
2440 |         let string = try ParserLibrary.parseBufferAsUTF8(parsed)
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: error: invalid redeclaration of 'badOS'
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:118:20: error: cannot find 'isalnum' in scope
116 |             return true
117 |         default:
118 |             return isalnum(Int32(self)) != 0
    |                    `- error: cannot find 'isalnum' in scope
119 |         }
120 |     }
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:127:9: error: cannot find 'isalnum' in scope
125 |
126 |     var isAlphaNum: Bool {
127 |         isalnum(Int32(self)) != 0
    |         `- error: cannot find 'isalnum' in scope
128 |     }
129 |
[506/552] Compiling NIOIMAPCore UInt8+ParseTypeMembership.swift
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Append.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
     |     `- note: add an explicit type annotation to silence this warning
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: error: invalid redeclaration of 'badOS'
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2438:13: error: cannot find 'isalpha' in scope
2436 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2437 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2438 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2439 |         }
2440 |         let string = try ParserLibrary.parseBufferAsUTF8(parsed)
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: error: invalid redeclaration of 'badOS'
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:118:20: error: cannot find 'isalnum' in scope
116 |             return true
117 |         default:
118 |             return isalnum(Int32(self)) != 0
    |                    `- error: cannot find 'isalnum' in scope
119 |         }
120 |     }
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:127:9: error: cannot find 'isalnum' in scope
125 |
126 |     var isAlphaNum: Bool {
127 |         isalnum(Int32(self)) != 0
    |         `- error: cannot find 'isalnum' in scope
128 |     }
129 |
[507/552] Compiling NIOIMAPCore Pipelining.swift
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Append.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
     |     `- note: add an explicit type annotation to silence this warning
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: error: invalid redeclaration of 'badOS'
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2438:13: error: cannot find 'isalpha' in scope
2436 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2437 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2438 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2439 |         }
2440 |         let string = try ParserLibrary.parseBufferAsUTF8(parsed)
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: error: invalid redeclaration of 'badOS'
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:118:20: error: cannot find 'isalnum' in scope
116 |             return true
117 |         default:
118 |             return isalnum(Int32(self)) != 0
    |                    `- error: cannot find 'isalnum' in scope
119 |         }
120 |     }
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:127:9: error: cannot find 'isalnum' in scope
125 |
126 |     var isAlphaNum: Bool {
127 |         isalnum(Int32(self)) != 0
    |         `- error: cannot find 'isalnum' in scope
128 |     }
129 |
[508/552] Compiling NIOIMAPCore PreviewText.swift
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Append.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
     |     `- note: add an explicit type annotation to silence this warning
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: error: invalid redeclaration of 'badOS'
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2438:13: error: cannot find 'isalpha' in scope
2436 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2437 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2438 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2439 |         }
2440 |         let string = try ParserLibrary.parseBufferAsUTF8(parsed)
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: error: invalid redeclaration of 'badOS'
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:118:20: error: cannot find 'isalnum' in scope
116 |             return true
117 |         default:
118 |             return isalnum(Int32(self)) != 0
    |                    `- error: cannot find 'isalnum' in scope
119 |         }
120 |     }
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:127:9: error: cannot find 'isalnum' in scope
125 |
126 |     var isAlphaNum: Bool {
127 |         isalnum(Int32(self)) != 0
    |         `- error: cannot find 'isalnum' in scope
128 |     }
129 |
[509/552] Compiling NIOIMAPCore ResponseEncodeBuffer.swift
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Append.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
     |     `- note: add an explicit type annotation to silence this warning
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: error: invalid redeclaration of 'badOS'
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2438:13: error: cannot find 'isalpha' in scope
2436 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2437 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2438 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2439 |         }
2440 |         let string = try ParserLibrary.parseBufferAsUTF8(parsed)
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: error: invalid redeclaration of 'badOS'
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:118:20: error: cannot find 'isalnum' in scope
116 |             return true
117 |         default:
118 |             return isalnum(Int32(self)) != 0
    |                    `- error: cannot find 'isalnum' in scope
119 |         }
120 |     }
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:127:9: error: cannot find 'isalnum' in scope
125 |
126 |     var isAlphaNum: Bool {
127 |         isalnum(Int32(self)) != 0
    |         `- error: cannot find 'isalnum' in scope
128 |     }
129 |
[510/552] Compiling NIOIMAPCore ResponseEncodingOptions.swift
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Append.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
     |     `- note: add an explicit type annotation to silence this warning
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: error: invalid redeclaration of 'badOS'
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2438:13: error: cannot find 'isalpha' in scope
2436 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2437 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2438 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2439 |         }
2440 |         let string = try ParserLibrary.parseBufferAsUTF8(parsed)
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: error: invalid redeclaration of 'badOS'
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:118:20: error: cannot find 'isalnum' in scope
116 |             return true
117 |         default:
118 |             return isalnum(Int32(self)) != 0
    |                    `- error: cannot find 'isalnum' in scope
119 |         }
120 |     }
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:127:9: error: cannot find 'isalnum' in scope
125 |
126 |     var isAlphaNum: Bool {
127 |         isalnum(Int32(self)) != 0
    |         `- error: cannot find 'isalnum' in scope
128 |     }
129 |
[511/552] Compiling NIOIMAPCore String+ByteBuffer.swift
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Append.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
     |     `- note: add an explicit type annotation to silence this warning
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: error: invalid redeclaration of 'badOS'
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2438:13: error: cannot find 'isalpha' in scope
2436 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2437 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2438 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2439 |         }
2440 |         let string = try ParserLibrary.parseBufferAsUTF8(parsed)
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: error: invalid redeclaration of 'badOS'
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:118:20: error: cannot find 'isalnum' in scope
116 |             return true
117 |         default:
118 |             return isalnum(Int32(self)) != 0
    |                    `- error: cannot find 'isalnum' in scope
119 |         }
120 |     }
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:127:9: error: cannot find 'isalnum' in scope
125 |
126 |     var isAlphaNum: Bool {
127 |         isalnum(Int32(self)) != 0
    |         `- error: cannot find 'isalnum' in scope
128 |     }
129 |
[512/552] Compiling NIOIMAPCore _ByteBufferProtocol.swift
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Append.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
     |     `- note: add an explicit type annotation to silence this warning
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: error: invalid redeclaration of 'badOS'
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2438:13: error: cannot find 'isalpha' in scope
2436 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2437 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2438 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2439 |         }
2440 |         let string = try ParserLibrary.parseBufferAsUTF8(parsed)
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: error: invalid redeclaration of 'badOS'
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:118:20: error: cannot find 'isalnum' in scope
116 |             return true
117 |         default:
118 |             return isalnum(Int32(self)) != 0
    |                    `- error: cannot find 'isalnum' in scope
119 |         }
120 |     }
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:127:9: error: cannot find 'isalnum' in scope
125 |
126 |     var isAlphaNum: Bool {
127 |         isalnum(Int32(self)) != 0
    |         `- error: cannot find 'isalnum' in scope
128 |     }
129 |
error: emit-module command failed with exit code 1 (use -v to see invocation)
[522/552] Compiling NIOIMAPCore AppendData.swift
[523/552] Compiling NIOIMAPCore AppendMessage.swift
[524/552] Compiling NIOIMAPCore AppendOptions.swift
[525/552] Compiling NIOIMAPCore AttributeFlag.swift
[526/552] Compiling NIOIMAPCore AuthenticatedURL.swift
[527/552] Compiling NIOIMAPCore AuthenticatedURLRump.swift
[528/552] Compiling NIOIMAPCore AuthenticatedURLVerifier.swift
[529/552] Compiling NIOIMAPCore AuthenticationMechanism.swift
[530/552] Compiling NIOIMAPCore Body.swift
[531/552] Compiling NIOIMAPCore BodyExtension.swift
[532/552] Compiling NIOIMAPCore Disposition.swift
[533/552] Compiling NIOIMAPCore DispositionAndLanguage.swift
[534/552] Compiling NIOIMAPCore Encoding.swift
[535/552] Compiling NIOIMAPCore Fields.swift
[536/552] Compiling NIOIMAPCore Language.swift
[537/552] Emitting module NIOIMAPCore
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Append.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Body.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Append.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Commands.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Body.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Date.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Commands.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Date.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Entry.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Envelope.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Fetch.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+List.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Mailbox.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Message.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Partial.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Response.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Search.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+Sequence.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
     |     `- note: add an explicit type annotation to silence this warning
  25 | #endif
  26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser+UID.swift:24:5: error: invalid redeclaration of 'badOS'
 22 | import ucrt
 23 | #else
 24 | let badOS = { fatalError("unsupported OS") }()
    |     `- error: invalid redeclaration of 'badOS'
 25 | #endif
 26 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/UInt8+ParseTypeMembership.swift:28:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
 26 | import func Musl.isalpha
 27 | #else
 28 | let badOS = { fatalError("unsupported OS") }()
    |     |- warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
    |     `- note: add an explicit type annotation to silence this warning
 29 | #endif
 30 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:24:5: error: invalid redeclaration of 'badOS'
  22 | import ucrt
  23 | #else
  24 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  25 | #endif
  26 |
BUILD FAILURE 6.1 android