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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

Successful build of swift-libs, reference main (fca5e0), with Swift 6.1 for Linux on 27 Apr 2025 17:17:18 UTC.

Swift 6 data race errors: 2

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/rock-n-code/swift-libs.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/rock-n-code/swift-libs
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at fca5e03 [Bugfix] Reference to Coordination library amended (#25)
Cloned https://github.com/rock-n-code/swift-libs.git
Revision (git rev-parse @):
fca5e034d60bafeb450c9f23ab70c0712acc0c97
SUCCESS checkout https://github.com/rock-n-code/swift-libs.git at main
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/rock-n-code/swift-libs.git
https://github.com/rock-n-code/swift-libs.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
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        "Cases/Extensions/String+EmptyTests.swift",
        "Cases/Extensions/String+LocalisationTests.swift",
        "Cases/Extensions/TimeZone+ZoneTests.swift",
        "Cases/Property Wrappers/LossyCodableList+DecodableTests.swift",
        "Cases/Property Wrappers/LossyCodableList+EncodableTests.swift",
        "Helpers/Extensions/Data+Result.swift",
        "Helpers/Extensions/Data+Seed.swift",
        "Helpers/Extensions/String+Result.swift",
        "Helpers/Extensions/String+Seed.swift",
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        "Helpers/Models/TestCodableList.swift"
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        "Extensions/String+Localisation.swift",
        "Extensions/TimeZone+Zone.swift",
        "Property Wrappers/LossyCodableList.swift"
      ],
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      "c99name" : "SwiftLibsDependencyTests",
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        "Property Wrappers/Dependency.swift",
        "Protocols/DependencyKey.swift",
        "Services/DependencyService.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "SwiftLibsCoordinationTests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftLibsCoordinationTests",
      "path" : "Tests/Coordination",
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        "Helpers/TestCoordinators.swift"
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        "Protocols/Router.swift",
        "Routers/BaseNavigationRouter.swift",
        "Routers/ModalNavigationRouter.swift",
        "Routers/PushNavigationRouter.swift",
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        "Enumerations/HTTPRequestMethod.swift",
        "Enumerations/HTTPResponseCode.swift",
        "Errors/MakeURLRequestError.swift",
        "Protocols/Client.swift",
        "Protocols/Endpoint.swift",
        "Use Cases/MakeURLRequestUseCase.swift"
      ],
      "type" : "library"
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Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures 2>&1
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Fetching https://github.com/apple/swift-docc-plugin
[1/2049] Fetching swift-docc-plugin
Fetched https://github.com/apple/swift-docc-plugin from cache (0.40s)
Computing version for https://github.com/apple/swift-docc-plugin
Computed https://github.com/apple/swift-docc-plugin at 1.4.3 (0.99s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit
[1/3375] Fetching swift-docc-symbolkit
Fetched https://github.com/swiftlang/swift-docc-symbolkit from cache (0.36s)
Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (0.98s)
Creating working copy for https://github.com/apple/swift-docc-plugin
Working copy of https://github.com/apple/swift-docc-plugin resolved at 1.4.3
Creating working copy for https://github.com/swiftlang/swift-docc-symbolkit
Working copy of https://github.com/swiftlang/swift-docc-symbolkit resolved at 1.0.0
[1/1] Compiling plugin Swift-DocC Preview
[2/2] Compiling plugin Swift-DocC
Building for debugging...
[2/7] Write sources
[6/7] Write swift-version-24593BA9C3E375BF.txt
[8/35] Emitting module SwiftLibsDependency
/host/spi-builder-workspace/Libraries/Dependency/Services/DependencyService.swift:18:24: warning: static property 'current' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
16 |     // MARK: Properties
17 |
18 |     private static var current = DependencyService()
   |                        |- warning: static property 'current' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                        |- note: convert 'current' to a 'let' constant to make 'Sendable' shared state immutable
   |                        |- note: add '@MainActor' to make static property 'current' part of global actor 'MainActor'
   |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
19 |
20 |     // MARK: Subscripts
[9/35] Compiling SwiftLibsCommunication MakeURLRequestError.swift
[10/35] Compiling SwiftLibsCommunication HTTPResponseCode.swift
[11/35] Compiling SwiftLibsCoordination WindowRouter.swift
[12/35] Compiling SwiftLibsCoordination PushNavigationRouter.swift
[13/35] Compiling SwiftLibsDependency Dependency.swift
[14/35] Compiling SwiftLibsDependency DependencyKey.swift
[15/35] Compiling SwiftLibsDependency DependencyService.swift
/host/spi-builder-workspace/Libraries/Dependency/Services/DependencyService.swift:18:24: warning: static property 'current' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
16 |     // MARK: Properties
17 |
18 |     private static var current = DependencyService()
   |                        |- warning: static property 'current' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                        |- note: convert 'current' to a 'let' constant to make 'Sendable' shared state immutable
   |                        |- note: add '@MainActor' to make static property 'current' part of global actor 'MainActor'
   |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
19 |
20 |     // MARK: Subscripts
[16/35] Emitting module SwiftLibsCoordination
[17/36] Compiling SwiftLibsCoordination ModalNavigationRouter.swift
[18/36] Compiling SwiftLibsCoordination Coordinator.swift
[19/36] Compiling SwiftLibsCoordination Router.swift
[20/36] Compiling SwiftLibsCoordination BaseNavigationRouter.swift
[21/37] Compiling SwiftLibsCommunication HTTPRequestMethod.swift
[24/37] Compiling SwiftLibsFoundation TimeZone+Zone.swift
[25/38] Compiling SwiftLibsCommunication Client.swift
[26/38] Compiling SwiftLibsFoundation Optional+Nil.swift
[27/38] Compiling SwiftLibsFoundation String+Empty.swift
[28/38] Compiling SwiftLibsFoundation String+Localisation.swift
[29/38] Compiling SwiftLibsFoundation Collection+Empty.swift
[30/38] Emitting module SwiftLibsFoundation
[31/38] Compiling SwiftLibsFoundation BundleError.swift
[32/38] Compiling SwiftLibsFoundation Bool+Init.swift
[33/38] Compiling SwiftLibsFoundation Bundle+LocalisationBundle.swift
[34/38] Compiling SwiftLibsCommunication Endpoint.swift
[35/38] Compiling SwiftLibsCommunication MakeURLRequestUseCase.swift
[36/38] Emitting module SwiftLibsCommunication
/host/spi-builder-workspace/Libraries/Communication/Classes/MockURLProtocol.swift:25:23: warning: static property 'mockData' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 23 |
 24 |     /// The dictionary in which the mock requests with its respective mock responses will be injected.
 25 |     public static var mockData: [MockURLRequest: MockURLResponse] = [:]
    |                       |- warning: static property 'mockData' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'mockData' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: add '@MainActor' to make static property 'mockData' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 26 |
 27 |     // MARK: Functions
[37/38] Compiling SwiftLibsCommunication MockURLProtocol.swift
/host/spi-builder-workspace/Libraries/Communication/Classes/MockURLProtocol.swift:25:23: warning: static property 'mockData' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 23 |
 24 |     /// The dictionary in which the mock requests with its respective mock responses will be injected.
 25 |     public static var mockData: [MockURLRequest: MockURLResponse] = [:]
    |                       |- warning: static property 'mockData' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: convert 'mockData' to a 'let' constant to make 'Sendable' shared state immutable
    |                       |- note: add '@MainActor' to make static property 'mockData' part of global actor 'MainActor'
    |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 26 |
 27 |     // MARK: Functions
[39/39] Compiling SwiftLibsFoundation LossyCodableList.swift
Build complete! (25.37s)
Build complete.
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basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Done.