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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 Concurrency, reference dev (f098b2), with Swift 6.1 for macOS (SPM) on 30 Apr 2025 10:26:54 UTC.

Swift 6 data race errors: 0

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats

Build Log

========================================
RunAll
========================================
Builder version: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/space-code/concurrency.git
Reference: dev
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/space-code/concurrency
 * branch            dev        -> FETCH_HEAD
 * [new branch]      dev        -> origin/dev
HEAD is now at f098b24 Update `ci.yml` (#4)
Cloned https://github.com/space-code/concurrency.git
Revision (git rev-parse @):
f098b246fa7f126dd53669447a4455d9664d78d4
SUCCESS checkout https://github.com/space-code/concurrency.git at dev
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/space-code/concurrency.git
https://github.com/space-code/concurrency.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Concurrency",
  "name" : "Concurrency",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "Concurrency",
      "targets" : [
        "Concurrency"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "TestConcurrency",
      "targets" : [
        "TestConcurrency"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "TestConcurrency",
      "module_type" : "SwiftTarget",
      "name" : "TestConcurrency",
      "path" : "Sources/TestConcurrency",
      "product_memberships" : [
        "TestConcurrency"
      ],
      "sources" : [
        "Task.swift",
        "TestDispatchQueue.swift",
        "TestDispatchQueueFactory.swift",
        "TestTaskFactory.swift"
      ],
      "target_dependencies" : [
        "Concurrency"
      ],
      "type" : "library"
    },
    {
      "c99name" : "ConcurrencyTests",
      "module_type" : "SwiftTarget",
      "name" : "ConcurrencyTests",
      "path" : "Tests/ConcurrencyTests",
      "sources" : [
        "DispatchQueueFactoryTests.swift"
      ],
      "target_dependencies" : [
        "Concurrency"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Concurrency",
      "module_type" : "SwiftTarget",
      "name" : "Concurrency",
      "path" : "Sources/Concurrency",
      "product_memberships" : [
        "Concurrency",
        "TestConcurrency"
      ],
      "sources" : [
        "DispatchQueue/DispatchQueue+IDispatchQueue.swift",
        "DispatchQueue/IDispatchQueue.swift",
        "DispatchQueueFactory/DispatchQueueFactory.swift",
        "DispatchQueueFactory/IDispatchQueueFactory.swift",
        "TaskFactory/ITaskFactory.swift",
        "TaskFactory/TaskFactory.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats
Building for debugging...
[0/3] Write sources
[2/3] Write swift-version-2F0A5646E1D333AE.txt
[4/10] Compiling Concurrency IDispatchQueueFactory.swift
[5/10] Compiling Concurrency DispatchQueueFactory.swift
[6/10] Compiling Concurrency TaskFactory.swift
[7/10] Compiling Concurrency IDispatchQueue.swift
[8/10] Emitting module Concurrency
[9/10] Compiling Concurrency ITaskFactory.swift
[10/10] Compiling Concurrency DispatchQueue+IDispatchQueue.swift
[11/15] Emitting module TestConcurrency
[12/15] Compiling TestConcurrency TestDispatchQueue.swift
[13/15] Compiling TestConcurrency Task.swift
[14/15] Compiling TestConcurrency TestTaskFactory.swift
[15/15] Compiling TestConcurrency TestDispatchQueueFactory.swift
Build complete! (5.59s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Concurrency",
  "name" : "Concurrency",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "Concurrency",
      "targets" : [
        "Concurrency"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "TestConcurrency",
      "targets" : [
        "TestConcurrency"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "TestConcurrency",
      "module_type" : "SwiftTarget",
      "name" : "TestConcurrency",
      "path" : "Sources/TestConcurrency",
      "product_memberships" : [
        "TestConcurrency"
      ],
      "sources" : [
        "Task.swift",
        "TestDispatchQueue.swift",
        "TestDispatchQueueFactory.swift",
        "TestTaskFactory.swift"
      ],
      "target_dependencies" : [
        "Concurrency"
      ],
      "type" : "library"
    },
    {
      "c99name" : "ConcurrencyTests",
      "module_type" : "SwiftTarget",
      "name" : "ConcurrencyTests",
      "path" : "Tests/ConcurrencyTests",
      "sources" : [
        "DispatchQueueFactoryTests.swift"
      ],
      "target_dependencies" : [
        "Concurrency"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Concurrency",
      "module_type" : "SwiftTarget",
      "name" : "Concurrency",
      "path" : "Sources/Concurrency",
      "product_memberships" : [
        "Concurrency",
        "TestConcurrency"
      ],
      "sources" : [
        "DispatchQueue/DispatchQueue+IDispatchQueue.swift",
        "DispatchQueue/IDispatchQueue.swift",
        "DispatchQueueFactory/DispatchQueueFactory.swift",
        "DispatchQueueFactory/IDispatchQueueFactory.swift",
        "TaskFactory/ITaskFactory.swift",
        "TaskFactory/TaskFactory.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Done.