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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 Mutex, reference main (c7c477), with Swift 6.0 for macOS (SPM) on 18 Apr 2025 04:24:07 UTC.

Swift 6 data race errors: 0

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats

Build Log

========================================
RunAll
========================================
Builder version: 4.60.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/swhitty/swift-mutex.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/swhitty/swift-mutex
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at c7c4773 Merge pull request #4 from swhitty/swift-6.1
Cloned https://github.com/swhitty/swift-mutex.git
Revision (git rev-parse @):
c7c4773090f8e8fc3998289b64a10d88845516b4
SUCCESS checkout https://github.com/swhitty/swift-mutex.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-mutex",
      "name": "Mutex",
      "url": "https://github.com/swhitty/swift-mutex.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-mutex",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/swhitty/swift-mutex.git
[1/255] Fetching swift-mutex
Fetched https://github.com/swhitty/swift-mutex.git from cache (0.69s)
Creating working copy for https://github.com/swhitty/swift-mutex.git
Working copy of https://github.com/swhitty/swift-mutex.git resolved at main (c7c4773)
warning: '.resolve-product-dependencies': dependency 'swift-mutex' 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/swhitty/swift-mutex.git
https://github.com/swhitty/swift-mutex.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Mutex",
  "name" : "Mutex",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "Mutex",
      "targets" : [
        "Mutex"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MutexTests",
      "module_type" : "SwiftTarget",
      "name" : "MutexTests",
      "path" : "Tests",
      "sources" : [
        "AllocatedLock+Unsafe.swift",
        "AllocatedLockTests.swift",
        "AllocatedLockXCTests.swift",
        "MutexTests.swift",
        "MutexXCTests.swift"
      ],
      "target_dependencies" : [
        "Mutex"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Mutex",
      "module_type" : "SwiftTarget",
      "name" : "Mutex",
      "path" : "Sources",
      "product_memberships" : [
        "Mutex"
      ],
      "sources" : [
        "AllocatedLock.swift",
        "Mutex.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.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-5BDAB9E9C0126B9D.txt
[3/5] Compiling Mutex Mutex.swift
[4/5] Compiling Mutex AllocatedLock.swift
[5/5] Emitting module Mutex
Build complete! (3.62s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Mutex",
  "name" : "Mutex",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "Mutex",
      "targets" : [
        "Mutex"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MutexTests",
      "module_type" : "SwiftTarget",
      "name" : "MutexTests",
      "path" : "Tests",
      "sources" : [
        "AllocatedLock+Unsafe.swift",
        "AllocatedLockTests.swift",
        "AllocatedLockXCTests.swift",
        "MutexTests.swift",
        "MutexXCTests.swift"
      ],
      "target_dependencies" : [
        "Mutex"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Mutex",
      "module_type" : "SwiftTarget",
      "name" : "Mutex",
      "path" : "Sources",
      "product_memberships" : [
        "Mutex"
      ],
      "sources" : [
        "AllocatedLock.swift",
        "Mutex.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Done.