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Build Information

Failed to build swift-nio-imap, reference main (01de1f), with Swift 6.1 for Android on 30 Apr 2026 10:16:19 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:android-6.1-latest swift build --swift-sdk aarch64-unknown-linux-android24 2>&1

Build Log

  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:30:5: error: invalid redeclaration of 'badOS'
  28 | import ucrt
  29 | #else
  30 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2410:13: error: cannot find 'isalpha' in scope
2408 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2409 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2410 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2411 |         }
2412 |         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 |
[546/624] Compiling NIOIMAPCore GrammarParser+Partial.swift
/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+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+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:30:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  28 | import ucrt
  29 | #else
  30 | 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
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:30:5: error: invalid redeclaration of 'badOS'
  28 | import ucrt
  29 | #else
  30 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2410:13: error: cannot find 'isalpha' in scope
2408 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2409 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2410 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2411 |         }
2412 |         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 |
[547/624] Compiling NIOIMAPCore GrammarParser+Response.swift
/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+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+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:30:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  28 | import ucrt
  29 | #else
  30 | 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
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:30:5: error: invalid redeclaration of 'badOS'
  28 | import ucrt
  29 | #else
  30 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2410:13: error: cannot find 'isalpha' in scope
2408 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2409 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2410 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2411 |         }
2412 |         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 |
[548/624] Compiling NIOIMAPCore GrammarParser+Search.swift
/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+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+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:30:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  28 | import ucrt
  29 | #else
  30 | 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
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:30:5: error: invalid redeclaration of 'badOS'
  28 | import ucrt
  29 | #else
  30 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2410:13: error: cannot find 'isalpha' in scope
2408 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2409 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2410 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2411 |         }
2412 |         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 |
[549/624] Compiling NIOIMAPCore GrammarParser+Sequence.swift
/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+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+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:30:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  28 | import ucrt
  29 | #else
  30 | 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
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:30:5: error: invalid redeclaration of 'badOS'
  28 | import ucrt
  29 | #else
  30 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2410:13: error: cannot find 'isalpha' in scope
2408 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2409 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2410 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2411 |         }
2412 |         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 |
[550/624] Compiling NIOIMAPCore GrammarParser+UID.swift
/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+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+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:30:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  28 | import ucrt
  29 | #else
  30 | 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
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:30:5: error: invalid redeclaration of 'badOS'
  28 | import ucrt
  29 | #else
  30 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2410:13: error: cannot find 'isalpha' in scope
2408 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2409 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2410 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2411 |         }
2412 |         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 |
[551/624] Compiling NIOIMAPCore GrammarParser.swift
/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+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+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:30:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  28 | import ucrt
  29 | #else
  30 | 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
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:30:5: error: invalid redeclaration of 'badOS'
  28 | import ucrt
  29 | #else
  30 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2410:13: error: cannot find 'isalpha' in scope
2408 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2409 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2410 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2411 |         }
2412 |         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 |
[552/624] Compiling NIOIMAPCore Parser.swift
/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+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+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:30:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  28 | import ucrt
  29 | #else
  30 | 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
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:30:5: error: invalid redeclaration of 'badOS'
  28 | import ucrt
  29 | #else
  30 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2410:13: error: cannot find 'isalpha' in scope
2408 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2409 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2410 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2411 |         }
2412 |         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 |
[553/624] Compiling NIOIMAPCore ParserLibrary.swift
/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+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+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:30:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  28 | import ucrt
  29 | #else
  30 | 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
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:30:5: error: invalid redeclaration of 'badOS'
  28 | import ucrt
  29 | #else
  30 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2410:13: error: cannot find 'isalpha' in scope
2408 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2409 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2410 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2411 |         }
2412 |         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 |
[554/624] Compiling NIOIMAPCore ResponseParser.swift
/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+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+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:30:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  28 | import ucrt
  29 | #else
  30 | 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
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:30:5: error: invalid redeclaration of 'badOS'
  28 | import ucrt
  29 | #else
  30 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2410:13: error: cannot find 'isalpha' in scope
2408 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2409 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2410 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2411 |         }
2412 |         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 |
[555/624] Compiling NIOIMAPCore SynchronizingLiteralParser.swift
/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+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+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:30:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  28 | import ucrt
  29 | #else
  30 | 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
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:30:5: error: invalid redeclaration of 'badOS'
  28 | import ucrt
  29 | #else
  30 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2410:13: error: cannot find 'isalpha' in scope
2408 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2409 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2410 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2411 |         }
2412 |         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 |
[556/624] Compiling NIOIMAPCore UInt8+ParseTypeMembership.swift
/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+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+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:30:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  28 | import ucrt
  29 | #else
  30 | 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
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:30:5: error: invalid redeclaration of 'badOS'
  28 | import ucrt
  29 | #else
  30 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2410:13: error: cannot find 'isalpha' in scope
2408 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2409 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2410 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2411 |         }
2412 |         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 |
[557/624] Compiling NIOIMAPCore Pipelining.swift
/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+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+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:30:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  28 | import ucrt
  29 | #else
  30 | 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
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:30:5: error: invalid redeclaration of 'badOS'
  28 | import ucrt
  29 | #else
  30 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2410:13: error: cannot find 'isalpha' in scope
2408 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2409 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2410 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2411 |         }
2412 |         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 |
[558/624] Compiling NIOIMAPCore PreviewText.swift
/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+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+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:30:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  28 | import ucrt
  29 | #else
  30 | 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
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:30:5: error: invalid redeclaration of 'badOS'
  28 | import ucrt
  29 | #else
  30 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2410:13: error: cannot find 'isalpha' in scope
2408 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2409 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2410 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2411 |         }
2412 |         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 |
[559/624] Compiling NIOIMAPCore ResponseEncodeBuffer.swift
/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+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+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:30:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  28 | import ucrt
  29 | #else
  30 | 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
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:30:5: error: invalid redeclaration of 'badOS'
  28 | import ucrt
  29 | #else
  30 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2410:13: error: cannot find 'isalpha' in scope
2408 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2409 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2410 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2411 |         }
2412 |         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 |
[560/624] Compiling NIOIMAPCore ResponseEncodingOptions.swift
/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+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+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:30:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  28 | import ucrt
  29 | #else
  30 | 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
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:30:5: error: invalid redeclaration of 'badOS'
  28 | import ucrt
  29 | #else
  30 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2410:13: error: cannot find 'isalpha' in scope
2408 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2409 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2410 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2411 |         }
2412 |         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 |
[561/624] Compiling NIOIMAPCore String+ByteBuffer.swift
/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+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+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:30:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  28 | import ucrt
  29 | #else
  30 | 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
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:30:5: error: invalid redeclaration of 'badOS'
  28 | import ucrt
  29 | #else
  30 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2410:13: error: cannot find 'isalpha' in scope
2408 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2409 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2410 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2411 |         }
2412 |         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 |
[562/624] Compiling NIOIMAPCore _ByteBufferProtocol.swift
/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+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+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:30:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  28 | import ucrt
  29 | #else
  30 | 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
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:30:5: error: invalid redeclaration of 'badOS'
  28 | import ucrt
  29 | #else
  30 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  31 | #endif
  32 |
/host/spi-builder-workspace/Sources/NIOIMAPCore/Parser/Grammar/GrammarParser.swift:2410:13: error: cannot find 'isalpha' in scope
2408 |     func parseStatusAttribute(buffer: inout ParseBuffer, tracker: StackTracker) throws -> MailboxAttribute {
2409 |         let parsed = try PL.parseOneOrMoreCharacters(buffer: &buffer, tracker: tracker) { c -> Bool in
2410 |             isalpha(Int32(c)) != 0
     |             `- error: cannot find 'isalpha' in scope
2411 |         }
2412 |         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)
[563/624] 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:30:5: warning: constant 'badOS' inferred to have type 'Never', which is an enum with no cases
  28 | import ucrt
  29 | #else
  30 | 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
  31 | #endif
  32 |
/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:30:5: error: invalid redeclaration of 'badOS'
  28 | import ucrt
  29 | #else
  30 | let badOS = { fatalError("unsupported OS") }()
     |     `- error: invalid redeclaration of 'badOS'
  31 | #endif
  32 |
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BUILD FAILURE 6.1 android