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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 Atomic, reference dev (31a44b), with Swift 6.1 for macOS (SPM) on 30 Apr 2025 04:49:26 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/atomic.git
Reference: dev
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/space-code/atomic
 * branch            dev        -> FETCH_HEAD
 * [new branch]      dev        -> origin/dev
HEAD is now at 31a44b9 Update `README.md` (#16)
Cloned https://github.com/space-code/atomic.git
Revision (git rev-parse @):
31a44b9af488b4a5c9d232d311ccaa7b0cc801fb
SUCCESS checkout https://github.com/space-code/atomic.git at dev
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/space-code/atomic.git
https://github.com/space-code/atomic.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Atomic",
  "name" : "Atomic",
  "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" : "11.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "Atomic",
      "targets" : [
        "Atomic"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "AtomicTests",
      "module_type" : "SwiftTarget",
      "name" : "AtomicTests",
      "path" : "Tests/AtomicTests",
      "sources" : [
        "AtomicTests.swift"
      ],
      "target_dependencies" : [
        "Atomic"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Atomic",
      "module_type" : "SwiftTarget",
      "name" : "Atomic",
      "path" : "Sources/Atomic",
      "product_memberships" : [
        "Atomic"
      ],
      "sources" : [
        "Classes/Core/Atomic/Atomic.swift",
        "Classes/Helpers/Lock/ILock.swift",
        "Classes/Helpers/Lock/UnfairLock.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
warning: 'spi-builder-workspace': /Users/admin/builder/spi-builder-workspace/Package.swift:12:16: warning: 'v11' is deprecated: tvOS 12.0 is the oldest supported version
10 |         .iOS(.v13),
11 |         .watchOS(.v6),
12 |         .tvOS(.v11),
   |                `- warning: 'v11' is deprecated: tvOS 12.0 is the oldest supported version
13 |         .visionOS(.v1),
14 |     ],
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...
[0/2] Write sources
[1/2] Write swift-version-2F0A5646E1D333AE.txt
[3/6] Compiling Atomic UnfairLock.swift
[4/6] Compiling Atomic ILock.swift
[5/6] Emitting module Atomic
[6/6] Compiling Atomic Atomic.swift
Build complete! (4.77s)
warning: 'spi-builder-workspace': /Users/admin/builder/spi-builder-workspace/Package.swift:12:16: warning: 'v11' is deprecated: tvOS 12.0 is the oldest supported version
10 |         .iOS(.v13),
11 |         .watchOS(.v6),
12 |         .tvOS(.v11),
   |                `- warning: 'v11' is deprecated: tvOS 12.0 is the oldest supported version
13 |         .visionOS(.v1),
14 |     ],
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Atomic",
  "name" : "Atomic",
  "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" : "11.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "Atomic",
      "targets" : [
        "Atomic"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "AtomicTests",
      "module_type" : "SwiftTarget",
      "name" : "AtomicTests",
      "path" : "Tests/AtomicTests",
      "sources" : [
        "AtomicTests.swift"
      ],
      "target_dependencies" : [
        "Atomic"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Atomic",
      "module_type" : "SwiftTarget",
      "name" : "Atomic",
      "path" : "Sources/Atomic",
      "product_memberships" : [
        "Atomic"
      ],
      "sources" : [
        "Classes/Core/Atomic/Atomic.swift",
        "Classes/Helpers/Lock/ILock.swift",
        "Classes/Helpers/Lock/UnfairLock.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
warning: 'spi-builder-workspace': /Users/admin/builder/spi-builder-workspace/Package.swift:12:16: warning: 'v11' is deprecated: tvOS 12.0 is the oldest supported version
10 |         .iOS(.v13),
11 |         .watchOS(.v6),
12 |         .tvOS(.v11),
   |                `- warning: 'v11' is deprecated: tvOS 12.0 is the oldest supported version
13 |         .visionOS(.v1),
14 |     ],
Done.