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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 1.1.0 (6304c8), with Swift 6.1 for macOS (SPM) on 30 Apr 2025 04:49:42 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: 1.1.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/space-code/atomic
 * tag               1.1.0      -> FETCH_HEAD
HEAD is now at 6304c80 Release `1.1.0` (#15)
Cloned https://github.com/space-code/atomic.git
Revision (git rev-parse @):
6304c805e9d97fe1239bcde561234d857164cb10
SUCCESS checkout https://github.com/space-code/atomic.git at 1.1.0
========================================
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 Atomic.swift
[4/6] Compiling Atomic UnfairLock.swift
[5/6] Compiling Atomic ILock.swift
[6/6] Emitting module Atomic
Build complete! (4.54s)
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.