Swift Package IndexBuild Information
Failed to build SwiftParse, reference 0.4.0 (56c5be), with Swift 6.3 for macOS (SPM) on 10 Apr 2026 11:19:30 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64Build Log
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RunAll
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Builder version: 4.70.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/mgadda/swift-parse.git
Reference: 0.4.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/mgadda/swift-parse
* tag 0.4.0 -> FETCH_HEAD
HEAD is now at 56c5beb Merge pull request #7 from mgadda/0.4.0
Cloned https://github.com/mgadda/swift-parse.git
Revision (git rev-parse @):
56c5beb92da9c5b1b6478fc49ffb7dee70c4fc7e
SUCCESS checkout https://github.com/mgadda/swift-parse.git at 0.4.0
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ResolveProductDependencies
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Resolving dependencies ...
{
"identity": ".resolve-product-dependencies",
"name": "resolve-dependencies",
"url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
"version": "unspecified",
"path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
"traits": [
"default"
],
"dependencies": [
{
"identity": "swift-parse",
"name": "SwiftParse",
"url": "https://github.com/mgadda/swift-parse.git",
"version": "unspecified",
"path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-parse",
"traits": [
"default"
],
"dependencies": [
]
}
]
}
Fetching https://github.com/mgadda/swift-parse.git
[1/541] Fetching swift-parse
Fetched https://github.com/mgadda/swift-parse.git from cache (0.77s)
Creating working copy for https://github.com/mgadda/swift-parse.git
Working copy of https://github.com/mgadda/swift-parse.git resolved at 0.4.0 (56c5beb)
warning: '.resolve-product-dependencies': dependency 'swift-parse' is not used by any target
Found 0 product dependencies
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Build
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Selected platform: macosSpm
Swift version: 6.3
Building package at path: $PWD
https://github.com/mgadda/swift-parse.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version--6988338F2F200930.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/10] Compiling SwiftParse Nothing.swift
[4/10] Compiling SwiftParse StringParsers.swift
[5/10] Compiling SwiftParse Map.swift
[6/10] Compiling SwiftParse Either.swift
[7/10] Compiling SwiftParse Operators.swift
[8/10] Emitting module SwiftParse
/Users/admin/builder/spi-builder-workspace/Sources/SwiftParse/Parsers.swift:28:14: warning: stored property 'at' of 'Sendable'-conforming generic struct 'ParseError' has non-Sendable type 'AnyCollection<Element>'
26 | /// and location of the failure.
27 | public struct ParseError<Element> : Error {
28 | public let at: AnyCollection<Element>
| `- warning: stored property 'at' of 'Sendable'-conforming generic struct 'ParseError' has non-Sendable type 'AnyCollection<Element>'
29 | public let reason: String?
30 | public init(at: AnyCollection<Element>, reason: String? = .none) {
Swift.AnyCollection:1:23: note: generic struct 'AnyCollection' does not conform to the 'Sendable' protocol
1 | @frozen public struct AnyCollection<Element> {
| `- note: generic struct 'AnyCollection' does not conform to the 'Sendable' protocol
2 | }
/Users/admin/builder/spi-builder-workspace/Sources/SwiftParse/Parsers.swift:86:12: error: generic parameter 'InputType' is not used in function signature [#no-usage]
84 | }
85 |
86 | func match<InputType: Collection>(range: ClosedRange<InputType.Element>) -> StandardParser<InputType, InputType.Element> {
| `- error: generic parameter 'InputType' is not used in function signature [#no-usage]
87 | return { source in
88 | guard let first = source.first else {
[9/10] Compiling SwiftParse OptionalExtensions.swift
[10/10] Compiling SwiftParse Parsers.swift
/Users/admin/builder/spi-builder-workspace/Sources/SwiftParse/Parsers.swift:28:14: warning: stored property 'at' of 'Sendable'-conforming generic struct 'ParseError' has non-Sendable type 'AnyCollection<Element>'
26 | /// and location of the failure.
27 | public struct ParseError<Element> : Error {
28 | public let at: AnyCollection<Element>
| `- warning: stored property 'at' of 'Sendable'-conforming generic struct 'ParseError' has non-Sendable type 'AnyCollection<Element>'
29 | public let reason: String?
30 | public init(at: AnyCollection<Element>, reason: String? = .none) {
Swift.AnyCollection:1:23: note: generic struct 'AnyCollection' does not conform to the 'Sendable' protocol
1 | @frozen public struct AnyCollection<Element> {
| `- note: generic struct 'AnyCollection' does not conform to the 'Sendable' protocol
2 | }
/Users/admin/builder/spi-builder-workspace/Sources/SwiftParse/Parsers.swift:86:12: error: generic parameter 'InputType' is not used in function signature [#no-usage]
84 | }
85 |
86 | func match<InputType: Collection>(range: ClosedRange<InputType.Element>) -> StandardParser<InputType, InputType.Element> {
| `- error: generic parameter 'InputType' is not used in function signature [#no-usage]
87 | return { source in
88 | guard let first = source.first else {
/Users/admin/builder/spi-builder-workspace/Sources/SwiftParse/Parsers.swift:463:23: warning: enum case 'success' has one associated value that is a tuple of 2 elements
461 | return { source in
462 | switch (left()(source), right()(source)) {
463 | case let (.success(value, out), .success):
| `- warning: enum case 'success' has one associated value that is a tuple of 2 elements
464 | return .success((value, out))
465 | case let (.failure(error), _):
<unknown>:0: note: 'success' declared here
BUILD FAILURE 6.3 macosSpm