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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 5.9 for Linux on 5 May 2025 21:26:17 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-5.9-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:             5.9
Building package at path:  $PWD
https://github.com/square/workflow-swift.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-5.9-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-5.9-latest: Pulling from finestructure/spi-images
Digest: sha256:93fe18f778ec94e026baa8cc68b2ae87de241b204c49ca7a3a12cf55897227aa
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-5.9-latest
Fetching https://github.com/pointfreeco/swift-custom-dump
Fetching https://github.com/pointfreeco/swift-perception
Fetching https://github.com/pointfreeco/swift-macro-testing
[1/4581] Fetching swift-custom-dump
[3071/5449] Fetching swift-custom-dump, swift-macro-testing
[4968/6860] Fetching swift-custom-dump, swift-macro-testing, swift-perception
Fetching https://github.com/pointfreeco/swift-identified-collections
Fetched https://github.com/pointfreeco/swift-perception (0.26s)
Fetching https://github.com/pointfreeco/swift-case-paths
Fetched https://github.com/pointfreeco/swift-macro-testing (0.26s)
Fetched https://github.com/pointfreeco/swift-custom-dump (0.26s)
Fetching https://github.com/swiftlang/swift-syntax
[1/4368] Fetching swift-case-paths
[4369/5876] Fetching swift-case-paths, swift-identified-collections
Fetched https://github.com/pointfreeco/swift-case-paths (0.29s)
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Fetching https://github.com/ReactiveX/RxSwift.git
Fetched https://github.com/pointfreeco/swift-identified-collections (0.37s)
Fetching https://github.com/ReactiveCocoa/ReactiveSwift.git
[1/52488] Fetching reactiveswift
[3676/122838] Fetching reactiveswift, swift-syntax
[4202/175521] Fetching reactiveswift, swift-syntax, rxswift
Fetched https://github.com/ReactiveCocoa/ReactiveSwift.git (2.88s)
[121382/123033] Fetching swift-syntax, rxswift
Fetched https://github.com/ReactiveX/RxSwift.git (7.57s)
Fetched https://github.com/swiftlang/swift-syntax (9.18s)
Computing version for https://github.com/ReactiveCocoa/ReactiveSwift.git
Computed https://github.com/ReactiveCocoa/ReactiveSwift.git at 7.2.0 (0.90s)
Computing version for https://github.com/pointfreeco/swift-perception
Computed https://github.com/pointfreeco/swift-perception at 1.6.0 (0.32s)
Fetching https://github.com/pointfreeco/xctest-dynamic-overlay
[1/5431] Fetching xctest-dynamic-overlay
Fetched https://github.com/pointfreeco/xctest-dynamic-overlay (0.64s)
Computing version for https://github.com/pointfreeco/swift-custom-dump
Computed https://github.com/pointfreeco/swift-custom-dump at 1.3.3 (0.30s)
Computing version for https://github.com/pointfreeco/swift-identified-collections
Computed https://github.com/pointfreeco/swift-identified-collections at 1.1.1 (0.33s)
Fetching https://github.com/apple/swift-collections
[1/16371] Fetching swift-collections
Fetched https://github.com/apple/swift-collections (0.95s)
Computing version for https://github.com/pointfreeco/swift-case-paths
Computed https://github.com/pointfreeco/swift-case-paths at 1.7.0 (0.38s)
Computing version for https://github.com/ReactiveX/RxSwift.git
Computed https://github.com/ReactiveX/RxSwift.git at 6.9.0 (0.35s)
Computing version for https://github.com/pointfreeco/swift-macro-testing
Computed https://github.com/pointfreeco/swift-macro-testing at 0.6.2 (0.33s)
Fetching https://github.com/pointfreeco/swift-snapshot-testing
[1/13159] Fetching swift-snapshot-testing
Fetched https://github.com/pointfreeco/swift-snapshot-testing (1.68s)
Computing version for https://github.com/pointfreeco/swift-snapshot-testing
Computed https://github.com/pointfreeco/swift-snapshot-testing at 1.18.3 (0.29s)
Computing version for https://github.com/apple/swift-collections
Computed https://github.com/apple/swift-collections at 1.1.4 (0.47s)
Computing version for https://github.com/pointfreeco/xctest-dynamic-overlay
Computed https://github.com/pointfreeco/xctest-dynamic-overlay at 1.5.2 (0.30s)
Computing version for https://github.com/swiftlang/swift-syntax
Computed https://github.com/swiftlang/swift-syntax at 600.0.1 (0.47s)
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/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/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/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-perception
Working copy of https://github.com/pointfreeco/swift-perception resolved at 1.6.0
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/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/ReactiveCocoa/ReactiveSwift.git
Working copy of https://github.com/ReactiveCocoa/ReactiveSwift.git resolved at 7.2.0
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/xctest-dynamic-overlay
Working copy of https://github.com/pointfreeco/xctest-dynamic-overlay resolved at 1.5.2
Building for debugging...
[0/22] Copying PrivacyInfo.xcprivacy
[1/22] Compiling _SwiftSyntaxCShims dummy.c
[3/196] Emitting module ViewEnvironment
[4/258] Emitting module InternalCollectionsUtilities
[5/260] Emitting module IssueReporting
[6/262] Emitting module ReactiveSwift
[7/268] Compiling IssueReporting WithExpectedIssue.swift
[8/268] Compiling IssueReporting WithIssueContext.swift
[9/268] Compiling InternalCollectionsUtilities UnsafeBufferPointer+Extras.swift
[10/268] Compiling InternalCollectionsUtilities UnsafeMutableBufferPointer+Extras.swift
[13/268] Emitting module SwiftSyntax600
[14/268] Compiling SwiftSyntax600 Empty.swift
[15/268] Compiling RxSwift Bag+Rx.swift
[16/268] Compiling RxSwift Bag.swift
[17/268] Compiling RxSwift AsyncSubject.swift
[18/268] Compiling RxSwift AtomicInt.swift
[19/269] Compiling RxSwift AddRef.swift
[20/269] Compiling RxSwift Amb.swift
[21/269] Compiling RxSwift AnonymousDisposable.swift
[22/269] Compiling RxSwift AsSingle.swift
[23/269] Compiling RxSwift AsyncLock.swift
[24/269] Compiling ViewEnvironment EnvironmentValues+ViewEnvironment.swift
[25/269] Compiling ViewEnvironment ViewEnvironment.swift
[26/269] Compiling ViewEnvironment ViewEnvironmentKey.swift
[27/269] Emitting module SwiftSyntax510
[28/269] Compiling RxSwift Binder.swift
[29/269] Compiling RxSwift BooleanDisposable.swift
[30/269] Compiling SwiftSyntax510 Empty.swift
[31/269] Compiling RxSwift BehaviorSubject.swift
[32/269] Compiling RxSwift BinaryDisposable.swift
[33/271] Compiling RxSwift AnonymousObserver.swift
[34/271] Compiling RxSwift AnyObserver.swift
[35/271] Compiling RxSwift AsMaybe.swift
[36/271] Compiling SwiftSyntax509 Empty.swift
[37/271] Emitting module SwiftSyntax509
[47/278] Wrapping AST for SwiftSyntax600 for debugging
[48/278] Wrapping AST for SwiftSyntax510 for debugging
[49/278] Wrapping AST for SwiftSyntax509 for debugging
[51/403] Emitting module ViewEnvironmentUI
[52/403] Compiling ViewEnvironmentUI UIView+ViewEnvironmentPropagating.swift
[53/403] Compiling ViewEnvironmentUI ViewEnvironmentPropagationNode.swift
[54/403] Emitting module RxSwift
[55/423] Compiling SwiftSyntax SyntaxTraits.swift
[56/423] Compiling SwiftSyntax SyntaxVisitor.swift
[57/423] Compiling SwiftSyntax TokenKind.swift
[58/423] Compiling SwiftSyntax Tokens.swift
[59/423] Compiling SwiftSyntax TriviaPieces.swift
[60/423] Compiling SwiftSyntax RawSyntaxNodesAB.swift
[61/423] Compiling SwiftSyntax RawSyntaxNodesC.swift
[62/430] Compiling SwiftSyntax RenamedNodesCompatibility.swift
[63/430] Compiling SwiftSyntax SyntaxAnyVisitor.swift
[64/430] Compiling SwiftSyntax SyntaxBaseNodes.swift
[65/430] Compiling SwiftSyntax SyntaxCollections.swift
[66/430] Compiling SwiftSyntax SyntaxEnum.swift
[67/430] Compiling SwiftSyntax SyntaxKind.swift
[68/430] Compiling SwiftSyntax SyntaxRewriter.swift
[69/430] Compiling SwiftSyntax AbsolutePosition.swift
[70/430] Compiling SwiftSyntax AbsoluteRawSyntax.swift
[71/430] Compiling SwiftSyntax AbsoluteSyntaxInfo.swift
[72/430] Compiling SwiftSyntax SyntaxChildren.swift
[73/430] Compiling SwiftSyntax SyntaxCollection.swift
[74/430] Compiling SwiftSyntax CustomTraits.swift
[75/430] Compiling SwiftSyntax Identifier.swift
[76/430] Compiling SwiftSyntax SourcePresence.swift
[77/430] Compiling SwiftSyntax SwiftSyntaxCompatibility.swift
[78/430] Compiling SwiftSyntax Syntax.swift
[79/430] Compiling SwiftSyntax SyntaxArena.swift
[81/430] Compiling SwiftSyntax SyntaxArenaAllocatedBuffer.swift
[82/430] Compiling SwiftSyntax MemoryLayout.swift
[83/430] Compiling SwiftSyntax MissingNodeInitializers.swift
[84/430] Compiling SwiftSyntax RawSyntax.swift
[85/430] Compiling SwiftSyntax RawSyntaxLayoutView.swift
[86/430] Compiling SwiftSyntax RawSyntaxNodeProtocol.swift
[87/430] Compiling SwiftSyntax RawSyntaxTokenView.swift
[91/430] Compiling SwiftSyntax SyntaxHashable.swift
[92/430] Compiling SwiftSyntax SyntaxIdentifier.swift
[93/430] Compiling SwiftSyntax SyntaxNodeFactory.swift
[94/430] Compiling SwiftSyntax SyntaxNodeStructure.swift
[95/430] Compiling ViewEnvironmentUI ViewEnvironmentObserving.swift
[96/430] Compiling ViewEnvironmentUI UIViewController+ViewEnvironmentPropagating.swift
[97/430] 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
                ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[101/430] Compiling SwiftSyntax Assert.swift
[102/430] Compiling SwiftSyntax BumpPtrAllocator.swift
[103/430] Compiling SwiftSyntax CommonAncestor.swift
[104/430] Compiling SwiftSyntax Convenience.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
  ~~~~~~~~~~~~~~~~^

error: fatalError
BUILD FAILURE 5.9 linux