Swift Package IndexBuild Information
Successful build of swift-async-algorithms, reference main (cbde9a), with Swift 6.4 for macOS (SPM) on 9 Oct 2026 05:46:36 UTC.
Swift 6 data race errors: 0
Build Command
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64Build Log
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RunAll
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Builder version: 5.1.1
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/apple/swift-async-algorithms.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/apple/swift-async-algorithms
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at cbde9ae Preserve debounce upstream failure without outstanding demand (#451)
Cloned https://github.com/apple/swift-async-algorithms.git
Revision (git rev-parse @):
cbde9aed744bc058974e6bd5c0367ca55a6bf97c
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/apple/swift-async-algorithms.git at main
========================================
Build
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Selected platform: macosSpm
Swift version: 6.4
Building package at path: $PWD
https://github.com/apple/swift-async-algorithms.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Computing dependencies]
[Constructing description]
[Pre-planning 1 / 361]
[Planning deferred tasks]
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[325 / 327] AsyncAlgorithms_XCTest
Build complete! (14.31 sec)
Fetching https://github.com/apple/swift-collections.git
[1/28691] Fetching swift-collections
Fetched https://github.com/apple/swift-collections.git (3.87s)
Computing version for https://github.com/apple/swift-collections.git
Computed https://github.com/apple/swift-collections.git at 1.7.2 (4.60s)
Creating working copy for https://github.com/apple/swift-collections.git
Working copy of https://github.com/apple/swift-collections.git resolved at 1.7.2
/Users/admin/builder/spi-builder-workspace/Sources/AsyncAlgorithms/AsyncChunksOfCountOrSignalSequence.swift:169:33: [1;33mwarning: [1;39mcapture of non-Sendable type 'Collected.Type' in an isolated closure[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/sendable-metatypes\SendableMetatypes]8;;\]
[0;36m167 |[0;0m return Iterator(
[0;36m168 |[0;0m iterator: merge(
[0;36m169 |[0;0m chain(base.map { Either.element($0) }, [.terminal].async),
[0;36m|[0;0m `- [1;33mwarning: [1;39mcapture of non-Sendable type 'Collected.Type' in an isolated closure[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/sendable-metatypes\SendableMetatypes]8;;\]
[0;36m170 |[0;0m signal.map { _ in Either.signal }
[0;36m171 |[0;0m ).makeAsyncIterator(),
/Users/admin/builder/spi-builder-workspace/Sources/AsyncAlgorithms/AsyncChunksOfCountOrSignalSequence.swift:170:34: [1;33mwarning: [1;39mcapture of non-Sendable type 'Collected.Type' in an isolated closure[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/sendable-metatypes\SendableMetatypes]8;;\]
[0;36m168 |[0;0m iterator: merge(
[0;36m169 |[0;0m chain(base.map { Either.element($0) }, [.terminal].async),
[0;36m170 |[0;0m signal.map { _ in Either.signal }
[0;36m|[0;0m `- [1;33mwarning: [1;39mcapture of non-Sendable type 'Collected.Type' in an isolated closure[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/sendable-metatypes\SendableMetatypes]8;;\]
[0;36m171 |[0;0m ).makeAsyncIterator(),
[0;36m172 |[0;0m count: count
[#SendableMetatypes]: <https://docs.swift.org/compiler/documentation/diagnostics/sendable-metatypes>
/Users/admin/builder/spi-builder-workspace/Sources/AsyncAlgorithms/MultiProducerSingleConsumerChannel/MultiProducerSingleConsumerAsyncChannel.swift:173:42: [1;33mwarning: [1;39mcannot use default expression for inference of 'Failure.Type' because it is inferrable from parameters #1, #2; this will be an error in a future Swift language mode[0;0m
[0;36m171 |[0;0m public static func makeChannel(
[0;36m172 |[0;0m of elementType: Element.Type = Element.self,
[0;36m173 |[0;0m throwing failureType: Failure.Type = Never.self,
[0;36m|[0;0m `- [1;33mwarning: [1;39mcannot use default expression for inference of 'Failure.Type' because it is inferrable from parameters #1, #2; this will be an error in a future Swift language mode[0;0m
[0;36m174 |[0;0m backpressureStrategy: Source.BackpressureStrategy
[0;36m175 |[0;0m ) -> sending ChannelAndStream {
/Users/admin/builder/spi-builder-workspace/Sources/AsyncAlgorithms/AsyncRemoveDuplicatesSequence.swift:18:11: [1;33mwarning: [1;39mcapture of non-Sendable type 'Self.Element.Type' in an isolated closure[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/sendable-metatypes\SendableMetatypes]8;;\]
[0;36m16 |[0;0m public func removeDuplicates() -> AsyncRemoveDuplicatesSequence<Self> {
[0;36m17 |[0;0m AsyncRemoveDuplicatesSequence(self) { lhs, rhs in
[0;36m18 |[0;0m lhs == rhs
[0;36m|[0;0m `- [1;33mwarning: [1;39mcapture of non-Sendable type 'Self.Element.Type' in an isolated closure[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/sendable-metatypes\SendableMetatypes]8;;\]
[0;36m19 |[0;0m }
[0;36m20 |[0;0m }
/Users/admin/builder/spi-builder-workspace/Sources/AsyncAlgorithms/AsyncShareSequence.swift:660:24: [1;33mwarning: [1;39mconformance of 'Base' to protocol 'AsyncSequence' may be isolated and cannot be passed to @concurrent context[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/isolated-conformances\IsolatedConformances]8;;\]
[0;36m658 |[0;0m }.get()
[0;36m659 |[0;0m #else
[0;36m660 |[0;0m return try await nextIteration(id).get()
[0;36m|[0;0m `- [1;33mwarning: [1;39mconformance of 'Base' to protocol 'AsyncSequence' may be isolated and cannot be passed to @concurrent context[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/isolated-conformances\IsolatedConformances]8;;\]
[0;36m661 |[0;0m #endif
[0;36m662 |[0;0m
[#IsolatedConformances]: <https://docs.swift.org/compiler/documentation/diagnostics/isolated-conformances>
[#SendableMetatypes]: <https://docs.swift.org/compiler/documentation/diagnostics/sendable-metatypes>
/Users/admin/builder/spi-builder-workspace/Sources/AsyncAlgorithms/MultiProducerSingleConsumerChannel/MultiProducerSingleConsumerAsyncChannel.swift:173:42: [1;33mwarning: [1;39mcannot use default expression for inference of 'Failure.Type' because it is inferrable from parameters #1, #2; this will be an error in a future Swift language mode[0;0m
[0;36m171 |[0;0m public static func makeChannel(
[0;36m172 |[0;0m of elementType: Element.Type = Element.self,
[0;36m173 |[0;0m throwing failureType: Failure.Type = Never.self,
[0;36m|[0;0m `- [1;33mwarning: [1;39mcannot use default expression for inference of 'Failure.Type' because it is inferrable from parameters #1, #2; this will be an error in a future Swift language mode[0;0m
[0;36m174 |[0;0m backpressureStrategy: Source.BackpressureStrategy
[0;36m175 |[0;0m ) -> sending ChannelAndStream {
/Users/admin/builder/spi-builder-workspace/Sources/AsyncAlgorithms_XCTest/ValidationTest.swift:72:90: [1;33mwarning: [1;39mparameter 'file' with default argument '#file' passed to parameter 'file', whose default argument is '#filePath'[0;0m
[0;36m39 |[0;0m expectedFailures: Set<String>,
[0;36m40 |[0;0m @AsyncSequenceValidationDiagram _ build: (AsyncSequenceValidationDiagram) -> Test,
[0;36m41 |[0;0m file: StaticString = #file,
[0;36m|[0;0m `- [1;39mnote: [1;39mdid you mean for parameter 'file' to default to '#filePath'?[0;0m
[0;36m42 |[0;0m line: UInt = #line
[0;36m43 |[0;0m ) {
[0;36m:[0;0m
[0;36m70 |[0;0m let actual = result.reconstituteActual(theme: theme)
[0;36m71 |[0;0m if expected != actual {
[0;36m72 |[0;0m XCTFail("Validation failure:\nExpected:\n\(expected)\nActual:\n\(actual)", file: file, line: line)
[0;36m|[0;0m |- [1;33mwarning: [1;39mparameter 'file' with default argument '#file' passed to parameter 'file', whose default argument is '#filePath'[0;0m
[0;36m|[0;0m `- [1;39mnote: [1;39madd parentheses to silence this warning[0;0m
[0;36m73 |[0;0m }
[0;36m74 |[0;0m }
XCTest.XCTFail.file:1:1: [1;39mnote: [1;39m'file' declared here[0;0m
[0;36m1 |[0;0m file: StaticString
[0;36m|[0;0m `- [1;39mnote: [1;39m'file' declared here[0;0m
/Users/admin/builder/spi-builder-workspace/Sources/AsyncAlgorithms_XCTest/ValidationTest.swift:77:72: [1;33mwarning: [1;39mparameter 'file' with default argument '#file' passed to parameter 'file', whose default argument is '#filePath'[0;0m
[0;36m39 |[0;0m expectedFailures: Set<String>,
[0;36m40 |[0;0m @AsyncSequenceValidationDiagram _ build: (AsyncSequenceValidationDiagram) -> Test,
[0;36m41 |[0;0m file: StaticString = #file,
[0;36m|[0;0m `- [1;39mnote: [1;39mdid you mean for parameter 'file' to default to '#filePath'?[0;0m
[0;36m42 |[0;0m line: UInt = #line
[0;36m43 |[0;0m ) {
[0;36m:[0;0m
[0;36m75 |[0;0m // any remaining expectations are failures that were expected but did not happen
[0;36m76 |[0;0m for expectation in expectations {
[0;36m77 |[0;0m XCTFail("Expected failure: \(expectation) did not occur.", file: file, line: line)
[0;36m|[0;0m |- [1;33mwarning: [1;39mparameter 'file' with default argument '#file' passed to parameter 'file', whose default argument is '#filePath'[0;0m
[0;36m|[0;0m `- [1;39mnote: [1;39madd parentheses to silence this warning[0;0m
[0;36m78 |[0;0m }
[0;36m79 |[0;0m }
XCTest.XCTFail.file:1:1: [1;39mnote: [1;39m'file' declared here[0;0m
[0;36m1 |[0;0m file: StaticString
[0;36m|[0;0m `- [1;39mnote: [1;39m'file' declared here[0;0m
Build complete.
{
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"TestRemoveDuplicates.swift",
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{
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Done.