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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 InfomaniakConcurrency, reference main (55fe75), with Swift 6.0 for macOS (SPM) on 5 Nov 2024 06:16:57 UTC.

Swift 6 data race errors: 1

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.56.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/Infomaniak/swift-concurrency.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/Infomaniak/swift-concurrency
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 55fe754 Merge pull request #5 from Infomaniak/asyncReduce
Cloned https://github.com/Infomaniak/swift-concurrency.git
Revision (git rev-parse @):
55fe7541cbfcfb4b73e7836b390e2c566a9ba910
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/Infomaniak/swift-concurrency.git at main
========================================
ResolveProductDependencies
========================================
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",
  "dependencies": [
    {
      "identity": "swift-concurrency",
      "name": "InfomaniakConcurrency",
      "url": "https://github.com/Infomaniak/swift-concurrency.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-concurrency",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/Infomaniak/swift-concurrency.git
[1/164] Fetching swift-concurrency
Fetched https://github.com/Infomaniak/swift-concurrency.git from cache (0.76s)
Creating working copy for https://github.com/Infomaniak/swift-concurrency.git
Working copy of https://github.com/Infomaniak/swift-concurrency.git resolved at main (55fe754)
warning: '.resolve-product-dependencies': dependency 'swift-concurrency' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/Infomaniak/swift-concurrency.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version--7754E27361AE5C74.txt
[3/12] Compiling InfomaniakConcurrency Collection+asyncMap.swift
[4/13] Compiling InfomaniakConcurrency Collection+asyncForEach.swift
[5/13] Compiling InfomaniakConcurrency Logs.swift
/Users/admin/builder/spi-builder-workspace/Sources/InfomaniakConcurrency/Internal/Logs.swift:21:24: warning: static property 'subsystem' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
19 | extension Logger {
20 |     /// Name of this system
21 |     private static var subsystem = "InfomaniakConcurrency"
   |                        |- warning: static property 'subsystem' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                        |- note: convert 'subsystem' to a 'let' constant to make 'Sendable' shared state immutable
   |                        |- note: annotate 'subsystem' with '@MainActor' if property should only be accessed from the main actor
   |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
22 |
23 |     /// Log channel for the concurrency used
[6/13] Compiling InfomaniakConcurrency Collection+asyncCompactMap.swift
[7/13] Compiling InfomaniakConcurrency ArrayAccumulator.swift
[8/13] Compiling InfomaniakConcurrency Collection+concurrentMap.swift
[9/13] Compiling InfomaniakConcurrency ConcurrencyHeuristic.swift
[10/13] Compiling InfomaniakConcurrency Collection+concurrentForEach.swift
/Users/admin/builder/spi-builder-workspace/Sources/InfomaniakConcurrency/Collection+concurrentForEach.swift:60:35: warning: passing closure as a 'sending' parameter risks causing data races between code in the current task and concurrent execution of the closure; this is an error in the Swift 6 language mode
58 |                 }
59 |
60 |                 taskGroup.addTask {
   |                                   `- warning: passing closure as a 'sending' parameter risks causing data races between code in the current task and concurrent execution of the closure; this is an error in the Swift 6 language mode
61 |                     try await task(nextElement)
   |                                    `- note: closure captures 'nextElement' which is accessible to code in the current task
62 |                 }
63 |             }
/Users/admin/builder/spi-builder-workspace/Sources/InfomaniakConcurrency/Collection+concurrentForEach.swift:68:35: warning: passing closure as a 'sending' parameter risks causing data races between code in the current task and concurrent execution of the closure; this is an error in the Swift 6 language mode
66 |             while let _ = try await taskGroup.next(),
67 |                   let nextElement = iterator.next() {
68 |                 taskGroup.addTask {
   |                                   `- warning: passing closure as a 'sending' parameter risks causing data races between code in the current task and concurrent execution of the closure; this is an error in the Swift 6 language mode
69 |                     try await task(nextElement)
   |                                    `- note: closure captures 'nextElement' which is accessible to code in the current task
70 |                 }
71 |             }
[11/13] Compiling InfomaniakConcurrency Collection+concurrentCompactMap.swift
/Users/admin/builder/spi-builder-workspace/Sources/InfomaniakConcurrency/Collection+concurrentCompactMap.swift:89:45: warning: non-sendable type '[Output]' in implicitly asynchronous access to actor-isolated property 'compactAccumulation' cannot cross actor boundary; this is an error in the Swift 6 language mode
45 |     ///   - transform: The operation to be applied to the `Collection` of items
46 |     /// - Returns: An ordered processed collection of the desired type, containing non nil values.
47 |     func concurrentCompactMap<Input, Output>(
   |                                      `- note: consider making generic parameter 'Output' conform to the 'Sendable' protocol
48 |         customConcurrency: Int?,
49 |         transform: @escaping @Sendable (_ item: Input) async throws -> Output?
   :
87 |
88 |         // Get the accumulated results.
89 |         let accumulated = await accumulator.compactAccumulation
   |                                             `- warning: non-sendable type '[Output]' in implicitly asynchronous access to actor-isolated property 'compactAccumulation' cannot cross actor boundary; this is an error in the Swift 6 language mode
90 |         return accumulated
91 |     }
/Users/admin/builder/spi-builder-workspace/Sources/InfomaniakConcurrency/Collection+concurrentCompactMap.swift:69:27: warning: task-isolated value of type '() async throws -> Void' passed as a strongly transferred parameter; later accesses could race; this is an error in the Swift 6 language mode
67 |                 }
68 |
69 |                 taskGroup.addTask {
   |                           `- warning: task-isolated value of type '() async throws -> Void' passed as a strongly transferred parameter; later accesses could race; this is an error in the Swift 6 language mode
70 |                     let result = try await transform(nextEnumeration.1)
71 |                     try await accumulator.set(item: result, atIndex: nextEnumeration.0)
/Users/admin/builder/spi-builder-workspace/Sources/InfomaniakConcurrency/Collection+concurrentCompactMap.swift:78:27: warning: task-isolated value of type '() async throws -> Void' passed as a strongly transferred parameter; later accesses could race; this is an error in the Swift 6 language mode
76 |             while let _ = try await taskGroup.next(),
77 |                   let nextEnumeration = enumeratedIterator.next() {
78 |                 taskGroup.addTask {
   |                           `- warning: task-isolated value of type '() async throws -> Void' passed as a strongly transferred parameter; later accesses could race; this is an error in the Swift 6 language mode
79 |                     let result = try await transform(nextEnumeration.1)
80 |                     try await accumulator.set(item: result, atIndex: nextEnumeration.0)
/Users/admin/builder/spi-builder-workspace/Sources/InfomaniakConcurrency/Collection+concurrentCompactMap.swift:71:43: warning: sending 'result' risks causing data races; this is an error in the Swift 6 language mode
69 |                 taskGroup.addTask {
70 |                     let result = try await transform(nextEnumeration.1)
71 |                     try await accumulator.set(item: result, atIndex: nextEnumeration.0)
   |                                           |- warning: sending 'result' risks causing data races; this is an error in the Swift 6 language mode
   |                                           `- note: sending task-isolated 'result' to actor-isolated instance method 'set(item:atIndex:)' risks causing data races between actor-isolated and task-isolated uses
72 |                 }
73 |             }
/Users/admin/builder/spi-builder-workspace/Sources/InfomaniakConcurrency/Collection+concurrentCompactMap.swift:80:43: warning: sending 'result' risks causing data races; this is an error in the Swift 6 language mode
78 |                 taskGroup.addTask {
79 |                     let result = try await transform(nextEnumeration.1)
80 |                     try await accumulator.set(item: result, atIndex: nextEnumeration.0)
   |                                           |- warning: sending 'result' risks causing data races; this is an error in the Swift 6 language mode
   |                                           `- note: sending task-isolated 'result' to actor-isolated instance method 'set(item:atIndex:)' risks causing data races between actor-isolated and task-isolated uses
81 |                 }
82 |             }
[12/13] Emitting module InfomaniakConcurrency
/Users/admin/builder/spi-builder-workspace/Sources/InfomaniakConcurrency/Internal/Logs.swift:21:24: warning: static property 'subsystem' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
19 | extension Logger {
20 |     /// Name of this system
21 |     private static var subsystem = "InfomaniakConcurrency"
   |                        |- warning: static property 'subsystem' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                        |- note: convert 'subsystem' to a 'let' constant to make 'Sendable' shared state immutable
   |                        |- note: annotate 'subsystem' with '@MainActor' if property should only be accessed from the main actor
   |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
22 |
23 |     /// Log channel for the concurrency used
[13/13] Compiling InfomaniakConcurrency Collection+asyncReduce.swift
Build complete! (13.80s)
Build complete.
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  "path" : "/Users/admin/builder/spi-builder-workspace",
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  "targets" : [
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      "name" : "InfomaniakConcurrencyTests",
      "path" : "Tests/InfomaniakConcurrencyTests",
      "sources" : [
        "TestHelper.swift",
        "UTCollection+async.swift",
        "UTCollection+concurrentCompactMap.swift",
        "UTCollection+concurrentForEach.swift",
        "UTCollection+concurrentMap.swift"
      ],
      "target_dependencies" : [
        "InfomaniakConcurrency"
      ],
      "type" : "test"
    },
    {
      "c99name" : "InfomaniakConcurrency",
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      "path" : "Sources/InfomaniakConcurrency",
      "product_memberships" : [
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        "Collection+concurrentForEach.swift",
        "Collection+concurrentMap.swift",
        "Internal/ArrayAccumulator.swift",
        "Internal/ConcurrencyHeuristic.swift",
        "Internal/Logs.swift",
        "Serial/Collection+asyncCompactMap.swift",
        "Serial/Collection+asyncForEach.swift",
        "Serial/Collection+asyncMap.swift",
        "Serial/Collection+asyncReduce.swift"
      ],
      "type" : "library"
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  "tools_version" : "5.6"
}
✅  Doc result (pending) reported
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GenerateDocs
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Generating docs at path:  $PWD/.docs/infomaniak/swift-concurrency/main
Repository:               Infomaniak/swift-concurrency
Swift version used:       6.0
Target:                   InfomaniakConcurrency
Extracting symbol information for 'InfomaniakConcurrency'...
Finished extracting symbol information for 'InfomaniakConcurrency'. (3.42s)
Building documentation for 'InfomaniakConcurrency'...
Finished building documentation for 'InfomaniakConcurrency' (0.14s)
Generated documentation archive at:
  /Users/admin/builder/spi-builder-workspace/.docs/infomaniak/swift-concurrency/main
Fetching https://github.com/swiftlang/swift-docc-plugin
[1/2038] Fetching swift-docc-plugin
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Working copy of https://github.com/swiftlang/swift-docc-symbolkit resolved at 1.0.0
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[2/11] Compiling InfomaniakConcurrency Collection+concurrentForEach.swift
[3/11] Compiling InfomaniakConcurrency Collection+asyncMap.swift
[4/11] Compiling InfomaniakConcurrency Collection+asyncCompactMap.swift
[5/11] Compiling InfomaniakConcurrency Collection+asyncForEach.swift
[6/12] Compiling InfomaniakConcurrency Logs.swift
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[9/12] Compiling InfomaniakConcurrency ConcurrencyHeuristic.swift
[10/12] Compiling InfomaniakConcurrency ArrayAccumulator.swift
[11/12] Emitting module InfomaniakConcurrency
[12/12] Compiling InfomaniakConcurrency Collection+asyncReduce.swift
Build of target: 'InfomaniakConcurrency' complete! (1.23s)
      80
2	/Users/admin/builder/spi-builder-workspace/.docs/infomaniak/swift-concurrency/main
✅  Doc result (uploading) reported
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SyncDocs
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Doc archive source directory: $PWD/.docs/infomaniak/swift-concurrency/main
File count: 80
Doc size:   2.0MB
Preparing doc bundle ...
Uploading prod-infomaniak-swift-concurrency-main-c3a12f89.zip to s3://spi-docs-inbox/prod-infomaniak-swift-concurrency-main-c3a12f89.zip
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Done.