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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-concurrency-extras, reference 1.3.1 (82a4ae), with Swift 6.1 for Linux on 30 Apr 2025 04:12:33 UTC.

Swift 6 data race errors: 0

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/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 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/pointfreeco/swift-concurrency-extras.git
Reference: 1.3.1
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/pointfreeco/swift-concurrency-extras
 * tag               1.3.1      -> FETCH_HEAD
HEAD is now at 82a4ae7 Run swift-format
Cloned https://github.com/pointfreeco/swift-concurrency-extras.git
Revision (git rev-parse @):
82a4ae7170d98d8538ec77238b7eb8e7199ef2e8
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/pointfreeco/swift-concurrency-extras.git at 1.3.1
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/pointfreeco/swift-concurrency-extras.git
https://github.com/pointfreeco/swift-concurrency-extras.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
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        "ConcurrencyExtras"
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          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "6"
  ],
  "targets" : [
    {
      "c99name" : "ConcurrencyExtrasTests",
      "module_type" : "SwiftTarget",
      "name" : "ConcurrencyExtrasTests",
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      "sources" : [
        "ActorIsolatedTests.swift",
        "AnyHashableSendableTests.swift",
        "AsyncStreamTests.swift",
        "LockIsolatedTests.swift",
        "MainSerialExecutorTests.swift",
        "ResultTests.swift"
      ],
      "target_dependencies" : [
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        "AnyHashableSendable.swift",
        "AsyncStream.swift",
        "AsyncThrowingStream.swift",
        "Internal/Locking.swift",
        "Internal/UncheckedBox.swift",
        "LockIsolated.swift",
        "MainSerialExecutor.swift",
        "Result.swift",
        "Task.swift",
        "UncheckedSendable.swift"
      ],
      "type" : "library"
    }
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Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$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 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 (0.38s)
Computing version for https://github.com/apple/swift-docc-plugin
Computed https://github.com/apple/swift-docc-plugin at 1.4.3 (2.26s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit
[1/3376] 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 (0.87s)
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
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
[1/1] Compiling plugin Swift-DocC Preview
[2/2] Compiling plugin Swift-DocC
Building for debugging...
[2/4] Write sources
[3/4] Write swift-version-24593BA9C3E375BF.txt
[5/15] Compiling ConcurrencyExtras Result.swift
[6/16] Compiling ConcurrencyExtras UncheckedSendable.swift
[7/16] Compiling ConcurrencyExtras Locking.swift
[8/16] Compiling ConcurrencyExtras UncheckedBox.swift
[9/16] Compiling ConcurrencyExtras Task.swift
[10/16] Compiling ConcurrencyExtras LockIsolated.swift
[11/16] Compiling ConcurrencyExtras MainSerialExecutor.swift
[12/16] Compiling ConcurrencyExtras ActorIsolated.swift
[13/16] Compiling ConcurrencyExtras AnyHashableSendable.swift
[14/16] Emitting module ConcurrencyExtras
[15/16] Compiling ConcurrencyExtras AsyncStream.swift
[16/16] Compiling ConcurrencyExtras AsyncThrowingStream.swift
Build complete! (25.01s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "swift-docc-plugin",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
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  ],
  "manifest_display_name" : "swift-concurrency-extras",
  "name" : "swift-concurrency-extras",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
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  "products" : [
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      "name" : "ConcurrencyExtras",
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        "ConcurrencyExtras"
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      "type" : {
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  ],
  "swift_languages_versions" : [
    "6"
  ],
  "targets" : [
    {
      "c99name" : "ConcurrencyExtrasTests",
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      "name" : "ConcurrencyExtrasTests",
      "path" : "Tests/ConcurrencyExtrasTests",
      "sources" : [
        "ActorIsolatedTests.swift",
        "AnyHashableSendableTests.swift",
        "AsyncStreamTests.swift",
        "LockIsolatedTests.swift",
        "MainSerialExecutorTests.swift",
        "ResultTests.swift"
      ],
      "target_dependencies" : [
        "ConcurrencyExtras"
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        "Internal/Locking.swift",
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        "LockIsolated.swift",
        "MainSerialExecutor.swift",
        "Result.swift",
        "Task.swift",
        "UncheckedSendable.swift"
      ],
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    }
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  "tools_version" : "6.0"
}
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.