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Track the adoption of Swift 6 strict concurrency checks for data race safety. How many packages are Ready for Swift 6?

Build Information

Failed to build Workflow, reference main (20d302), with Swift 5.10 for Linux on 5 May 2025 21:26:14 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-5.10-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.61.3
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/square/workflow-swift.git
Reference: main
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: 	git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: 	git branch -m <name>
From https://github.com/square/workflow-swift
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 20d3025 Adds a convenience for mapping Never outputs to other types (#340)
Cloned https://github.com/square/workflow-swift.git
Revision (git rev-parse @):
20d3025f9e20d1a5c120656964101f8a4e4f96a6
SUCCESS checkout https://github.com/square/workflow-swift.git at main
========================================
Build
========================================
Selected platform:         linux
Swift version:             5.10
Building package at path:  $PWD
https://github.com/square/workflow-swift.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-5.10-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-5.10-latest: Pulling from finestructure/spi-images
Digest: sha256:616ef225d0085997f26355ad9695b1159b91f6187a43f9ff135cb59d096bc97d
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-5.10-latest
Fetching https://github.com/pointfreeco/swift-identified-collections
Fetching https://github.com/pointfreeco/swift-perception
Fetching https://github.com/pointfreeco/swift-custom-dump
Fetching https://github.com/swiftlang/swift-syntax
Fetching https://github.com/pointfreeco/swift-case-paths
Fetching https://github.com/pointfreeco/swift-macro-testing
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[1786/6647] Fetching swift-perception, swift-macro-testing, swift-case-paths
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[11229/12736] Fetching swift-perception, swift-macro-testing, swift-case-paths, swift-custom-dump, swift-identified-collections
Fetched https://github.com/pointfreeco/swift-macro-testing from cache (0.44s)
Fetching https://github.com/ReactiveX/RxSwift.git
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Fetching https://github.com/ReactiveCocoa/ReactiveSwift.git
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Fetched https://github.com/ReactiveCocoa/ReactiveSwift.git from cache (2.61s)
[121453/123033] Fetching swift-syntax, rxswift
Fetched https://github.com/ReactiveX/RxSwift.git from cache (5.94s)
Fetched https://github.com/pointfreeco/swift-custom-dump from cache (6.51s)
Fetched https://github.com/pointfreeco/swift-case-paths from cache (6.51s)
Fetched https://github.com/pointfreeco/swift-identified-collections from cache (6.52s)
Fetched https://github.com/swiftlang/swift-syntax from cache (6.57s)
Computing version for https://github.com/ReactiveCocoa/ReactiveSwift.git
Computed https://github.com/ReactiveCocoa/ReactiveSwift.git at 7.2.0 (1.09s)
Computing version for https://github.com/pointfreeco/swift-perception
Computed https://github.com/pointfreeco/swift-perception at 1.6.0 (0.41s)
Fetching https://github.com/pointfreeco/xctest-dynamic-overlay
[1/5431] Fetching xctest-dynamic-overlay
Fetched https://github.com/pointfreeco/xctest-dynamic-overlay from cache (0.73s)
Computing version for https://github.com/pointfreeco/swift-custom-dump
Computed https://github.com/pointfreeco/swift-custom-dump at 1.3.3 (0.36s)
Computing version for https://github.com/pointfreeco/swift-identified-collections
Computed https://github.com/pointfreeco/swift-identified-collections at 1.1.1 (0.39s)
Fetching https://github.com/apple/swift-collections
[1/16371] Fetching swift-collections
Fetched https://github.com/apple/swift-collections from cache (1.07s)
Computing version for https://github.com/pointfreeco/swift-case-paths
Computed https://github.com/pointfreeco/swift-case-paths at 1.7.0 (0.48s)
Computing version for https://github.com/ReactiveX/RxSwift.git
Computed https://github.com/ReactiveX/RxSwift.git at 6.9.0 (0.43s)
Computing version for https://github.com/pointfreeco/swift-macro-testing
Computed https://github.com/pointfreeco/swift-macro-testing at 0.6.2 (0.38s)
Fetching https://github.com/pointfreeco/swift-snapshot-testing
[1/13159] Fetching swift-snapshot-testing
Fetched https://github.com/pointfreeco/swift-snapshot-testing from cache (1.79s)
Computing version for https://github.com/pointfreeco/swift-snapshot-testing
Computed https://github.com/pointfreeco/swift-snapshot-testing at 1.18.3 (0.39s)
Computing version for https://github.com/apple/swift-collections
Computed https://github.com/apple/swift-collections at 1.1.4 (0.63s)
Computing version for https://github.com/pointfreeco/xctest-dynamic-overlay
Computed https://github.com/pointfreeco/xctest-dynamic-overlay at 1.5.2 (0.37s)
Computing version for https://github.com/swiftlang/swift-syntax
Computed https://github.com/swiftlang/swift-syntax at 600.0.1 (0.61s)
Creating working copy for https://github.com/swiftlang/swift-syntax
Working copy of https://github.com/swiftlang/swift-syntax resolved at 600.0.1
Creating working copy for https://github.com/pointfreeco/swift-custom-dump
Working copy of https://github.com/pointfreeco/swift-custom-dump resolved at 1.3.3
Creating working copy for https://github.com/pointfreeco/swift-case-paths
Working copy of https://github.com/pointfreeco/swift-case-paths resolved at 1.7.0
Creating working copy for https://github.com/apple/swift-collections
Working copy of https://github.com/apple/swift-collections resolved at 1.1.4
Creating working copy for https://github.com/pointfreeco/swift-identified-collections
Working copy of https://github.com/pointfreeco/swift-identified-collections resolved at 1.1.1
Creating working copy for https://github.com/ReactiveX/RxSwift.git
Working copy of https://github.com/ReactiveX/RxSwift.git resolved at 6.9.0
Creating working copy for https://github.com/pointfreeco/swift-macro-testing
Working copy of https://github.com/pointfreeco/swift-macro-testing resolved at 0.6.2
Creating working copy for https://github.com/pointfreeco/xctest-dynamic-overlay
Working copy of https://github.com/pointfreeco/xctest-dynamic-overlay resolved at 1.5.2
Creating working copy for https://github.com/ReactiveCocoa/ReactiveSwift.git
Working copy of https://github.com/ReactiveCocoa/ReactiveSwift.git resolved at 7.2.0
Creating working copy for https://github.com/pointfreeco/swift-snapshot-testing
Working copy of https://github.com/pointfreeco/swift-snapshot-testing resolved at 1.18.3
Creating working copy for https://github.com/pointfreeco/swift-perception
Working copy of https://github.com/pointfreeco/swift-perception resolved at 1.6.0
Building for debugging...
[0/70] Write sources
[13/70] Copying PrivacyInfo.xcprivacy
[17/70] Write sources
[45/70] Compiling _SwiftSyntaxCShims dummy.c
[46/70] Write swift-version-24593BA9C3E375BF.txt
[48/306] Compiling RxSwift CurrentThreadScheduler.swift
[49/306] Compiling RxSwift Date+Dispatch.swift
[50/308] Compiling RxSwift DispatchQueueConfiguration.swift
[51/308] Compiling RxSwift Disposable.swift
[52/308] Compiling RxSwift Disposables.swift
[53/308] Compiling RxSwift DisposeBag.swift
[54/308] Compiling RxSwift DisposeBase.swift
[55/308] Compiling RxSwift DistinctUntilChanged.swift
[56/308] Compiling ViewEnvironment ViewEnvironmentKey.swift
[57/308] Compiling ViewEnvironment ViewEnvironment.swift
[58/308] Emitting module InternalCollectionsUtilities
[59/314] Compiling RxSwift ConcurrentDispatchQueueScheduler.swift
[60/314] Compiling RxSwift ConcurrentMainScheduler.swift
[61/314] Compiling RxSwift Decode.swift
[62/314] Emitting module ViewEnvironment
[63/314] Compiling RxSwift DefaultIfEmpty.swift
[64/314] Compiling ViewEnvironment EnvironmentValues+ViewEnvironment.swift
[65/315] Emitting module SwiftSyntax509
[66/315] Compiling SwiftSyntax509 Empty.swift
[67/315] Compiling InternalCollectionsUtilities UnsafeBufferPointer+Extras.swift
[68/315] Compiling InternalCollectionsUtilities UnsafeMutableBufferPointer+Extras.swift
[69/316] Compiling RxSwift Debounce.swift
[70/316] Compiling RxSwift Debug.swift
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[74/319] Compiling SwiftSyntax600 Empty.swift
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[88/320] Wrapping AST for SwiftSyntax510 for debugging
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[93/376] Emitting module ViewEnvironmentUI
[94/380] Compiling ViewEnvironmentUI UIView+ViewEnvironmentPropagating.swift
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[97/386] Emitting module RxSwift
[98/438] Compiling ViewEnvironmentUI ViewEnvironmentPropagationNode.swift
[99/466] Compiling OrderedCollections OrderedDictionary+Partial RangeReplaceableCollection.swift
[100/466] Compiling OrderedCollections OrderedDictionary+Sendable.swift
[101/466] Compiling OrderedCollections OrderedDictionary+Sequence.swift
[102/466] Compiling OrderedCollections OrderedDictionary+Values.swift
[103/466] Emitting module IssueReporting
[106/466] Compiling OrderedCollections OrderedDictionary+Codable.swift
[107/466] Compiling OrderedCollections OrderedDictionary+CustomReflectable.swift
[108/466] Compiling OrderedCollections OrderedDictionary+Deprecations.swift
[109/466] Compiling OrderedCollections OrderedDictionary+Descriptions.swift
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[111/466] Compiling OrderedCollections _HashTable+Bucket.swift
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[115/466] Compiling OrderedCollections _HashTable+Testing.swift
[116/466] Compiling OrderedCollections _HashTable+UnsafeHandle.swift
[117/466] Compiling OrderedCollections _Hashtable+Header.swift
[118/466] Compiling OrderedCollections OrderedDictionary+Hashable.swift
[119/466] Compiling OrderedCollections OrderedDictionary+Initializers.swift
[120/466] Compiling OrderedCollections OrderedDictionary+Invariants.swift
[121/466] Compiling OrderedCollections OrderedDictionary+Partial MutableCollection.swift
[124/466] Compiling RxSwift Never.swift
[125/466] Compiling RxSwift NopDisposable.swift
[126/466] Compiling RxSwift Observable+Concurrency.swift
[127/466] Compiling RxSwift Observable.swift
[128/466] Compiling RxSwift ObservableConvertibleType+Infallible.swift
[129/466] Compiling RxSwift ObservableConvertibleType.swift
[130/466] Compiling RxSwift ObservableType+Extensions.swift
[131/466] Compiling RxSwift ObservableType+PrimitiveSequence.swift
[132/466] Compiling RxSwift ObservableType.swift
[133/466] Compiling RxSwift ObserveOn.swift
[134/466] Compiling RxSwift ObserverBase.swift
[135/466] Compiling RxSwift ObserverType.swift
[136/466] Compiling RxSwift OperationQueueScheduler.swift
[137/466] Compiling RxSwift Optional.swift
[138/466] Compiling RxSwift Platform.Darwin.swift
[139/466] Compiling RxSwift Platform.Linux.swift
[140/466] Compiling RxSwift PrimitiveSequence+Concurrency.swift
[141/466] Compiling RxSwift PrimitiveSequence+Zip+arity.swift
[142/466] Compiling RxSwift PrimitiveSequence.swift
[143/466] Compiling RxSwift PriorityQueue.swift
[144/466] Compiling OrderedCollections _HashTable.swift
/host/spi-builder-workspace/.build/checkouts/xctest-dynamic-overlay/Sources/IssueReporting/Internal/Warn.swift:2:19: remark: '@preconcurrency' attribute on module 'Foundation' is unused
  @preconcurrency import Foundation
  ~~~~~~~~~~~~~~~~^

/host/spi-builder-workspace/.build/checkouts/xctest-dynamic-overlay/Sources/IssueReporting/Internal/Warn.swift:2:19: remark: '@preconcurrency' attribute on module 'Foundation' is unused
  @preconcurrency import Foundation
  ~~~~~~~~~~~~~~~~^

/host/spi-builder-workspace/.build/checkouts/xctest-dynamic-overlay/Sources/IssueReporting/Internal/Warn.swift:2:19: remark: '@preconcurrency' attribute on module 'Foundation' is unused
  @preconcurrency import Foundation
  ~~~~~~~~~~~~~~~~^

[150/466] Emitting module ReactiveSwift
[158/467] Compiling OrderedCollections OrderedSet+Descriptions.swift
[159/467] Compiling OrderedCollections OrderedSet+Diffing.swift
[160/467] Compiling OrderedCollections OrderedSet+Equatable.swift
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[166/467] Compiling OrderedCollections OrderedSet+Partial MutableCollection.swift
[167/467] Compiling OrderedCollections OrderedSet+Partial RangeReplaceableCollection.swift
[168/467] Compiling OrderedCollections OrderedSet+Partial SetAlgebra formIntersection.swift
[169/467] Compiling OrderedCollections OrderedSet+Partial SetAlgebra formSymmetricDifference.swift
[170/467] Compiling OrderedCollections OrderedSet+Partial SetAlgebra formUnion.swift
[171/467] Compiling OrderedCollections OrderedSet+Partial SetAlgebra intersection.swift
[172/467] Compiling OrderedCollections OrderedSet+Partial SetAlgebra isDisjoint.swift
[173/467] Compiling OrderedCollections OrderedSet+Partial SetAlgebra isEqualSet.swift
[174/467] Compiling OrderedCollections OrderedSet+Partial SetAlgebra isStrictSubset.swift
[175/467] Compiling OrderedCollections OrderedSet+Partial SetAlgebra isStrictSuperset.swift
[176/467] Compiling OrderedCollections OrderedSet+Partial SetAlgebra subtract.swift
[177/467] Compiling OrderedCollections OrderedSet+Partial SetAlgebra subtracting.swift
[178/467] Compiling OrderedCollections OrderedSet+Partial SetAlgebra symmetricDifference.swift
[179/467] Compiling OrderedCollections OrderedSet+Partial SetAlgebra union.swift
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[181/467] Compiling OrderedCollections OrderedSet+RandomAccessCollection.swift
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[183/467] Compiling RxSwift SchedulerType.swift
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[186/467] Compiling RxSwift SerialDisposable.swift
[187/467] Compiling RxSwift ShareReplayScope.swift
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[189/467] Compiling RxSwift SingleAssignmentDisposable.swift
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[197/468] Compiling RxSwift SubscribeOn.swift
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[201/468] Compiling RxSwift SwitchIfEmpty.swift
[202/468] Compiling RxSwift SynchronizedDisposeType.swift
[203/474] Compiling ViewEnvironmentUI ViewEnvironmentObserving.swift
[204/474] Compiling ViewEnvironmentUI UIViewController+ViewEnvironmentPropagating.swift
[206/474] Compiling ViewEnvironmentUI ViewEnvironmentPropagating.swift
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:259:13: error: cannot find 'objc_getAssociatedObject' in scope
            objc_getAssociatedObject(self, &AssociatedKeys.ancestorOverride) as? EnvironmentAncestorProvider
            ^~~~~~~~~~~~~~~~~~~~~~~~
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:267:13: error: cannot find 'objc_setAssociatedObject' in scope
            objc_setAssociatedObject(self, &AssociatedKeys.ancestorOverride, newValue, .OBJC_ASSOCIATION_RETAIN)
            ^~~~~~~~~~~~~~~~~~~~~~~~
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:267:89: error: cannot infer contextual base in reference to member 'OBJC_ASSOCIATION_RETAIN'
            objc_setAssociatedObject(self, &AssociatedKeys.ancestorOverride, newValue, .OBJC_ASSOCIATION_RETAIN)
                                                                                       ~^~~~~~~~~~~~~~~~~~~~~~~
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:293:13: error: cannot find 'objc_getAssociatedObject' in scope
            objc_getAssociatedObject(self, &AssociatedKeys.descendantsOverride) as? EnvironmentDescendantsProvider
            ^~~~~~~~~~~~~~~~~~~~~~~~
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:301:13: error: cannot find 'objc_setAssociatedObject' in scope
            objc_setAssociatedObject(self, &AssociatedKeys.descendantsOverride, newValue, .OBJC_ASSOCIATION_RETAIN)
            ^~~~~~~~~~~~~~~~~~~~~~~~
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:301:92: error: cannot infer contextual base in reference to member 'OBJC_ASSOCIATION_RETAIN'
            objc_setAssociatedObject(self, &AssociatedKeys.descendantsOverride, newValue, .OBJC_ASSOCIATION_RETAIN)
                                                                                          ~^~~~~~~~~~~~~~~~~~~~~~~
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:436:13: error: cannot find 'objc_getAssociatedObject' in scope
            objc_getAssociatedObject(
            ^~~~~~~~~~~~~~~~~~~~~~~~
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:442:13: error: cannot find 'objc_setAssociatedObject' in scope
            objc_setAssociatedObject(
            ^~~~~~~~~~~~~~~~~~~~~~~~
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:446:18: error: cannot infer contextual base in reference to member 'OBJC_ASSOCIATION_RETAIN_NONATOMIC'
                .OBJC_ASSOCIATION_RETAIN_NONATOMIC
                ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:453:36: error: cannot find 'objc_getAssociatedObject' in scope
            let associatedObject = objc_getAssociatedObject(
                                   ^~~~~~~~~~~~~~~~~~~~~~~~
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:460:13: error: cannot find 'objc_setAssociatedObject' in scope
            objc_setAssociatedObject(
            ^~~~~~~~~~~~~~~~~~~~~~~~
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:464:17: error: cannot find 'objc_AssociationPolicy' in scope
                objc_AssociationPolicy.OBJC_ASSOCIATION_COPY
                ^~~~~~~~~~~~~~~~~~~~~~
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:513:13: error: cannot find 'objc_getAssociatedObject' in scope
            objc_getAssociatedObject(
            ^~~~~~~~~~~~~~~~~~~~~~~~
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:519:13: error: cannot find 'objc_setAssociatedObject' in scope
            objc_setAssociatedObject(
            ^~~~~~~~~~~~~~~~~~~~~~~~
/host/spi-builder-workspace/ViewEnvironmentUI/Sources/ViewEnvironmentPropagating.swift:523:18: error: cannot infer contextual base in reference to member 'OBJC_ASSOCIATION_RETAIN_NONATOMIC'
                .OBJC_ASSOCIATION_RETAIN_NONATOMIC
                ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[212/474] Compiling OrderedCollections OrderedSet+Partial SetAlgebra isSubset.swift
[213/474] Compiling OrderedCollections OrderedSet+Partial SetAlgebra isSuperset.swift
error: fatalError
BUILD FAILURE 5.10 linux