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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 Foil, reference 6.0.0 (b78395), with Swift 6.1 for macOS (SPM) on 29 Apr 2025 13:26:19 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/jessesquires/Foil.git
Reference: 6.0.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/jessesquires/Foil
 * tag               6.0.0      -> FETCH_HEAD
HEAD is now at b783956 [6.0 release] re-gen docs
Cloned https://github.com/jessesquires/Foil.git
Revision (git rev-parse @):
b7839568d23a05614d97d053a450ca88541fe4a5
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/jessesquires/Foil.git at 6.0.0
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/jessesquires/Foil.git
https://github.com/jessesquires/Foil.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Foil",
  "name" : "Foil",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    },
    {
      "name" : "macos",
      "version" : "11.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "Foil",
      "targets" : [
        "Foil"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "6"
  ],
  "targets" : [
    {
      "c99name" : "FoilTests",
      "module_type" : "SwiftTarget",
      "name" : "FoilTests",
      "path" : "Tests",
      "sources" : [
        "IntegrationTests.swift",
        "ObservationTests.swift",
        "PropertyWrapperTests.swift",
        "TestSettings.swift",
        "UserDefaults+Extensions.swift"
      ],
      "target_dependencies" : [
        "Foil"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Foil",
      "module_type" : "SwiftTarget",
      "name" : "Foil",
      "path" : "Sources",
      "product_memberships" : [
        "Foil"
      ],
      "sources" : [
        "FoilDefaultStorage.swift",
        "FoilDefaultStorageOptional.swift",
        "ObserverTrampoline.swift",
        "UserDefaults+Extensions.swift",
        "UserDefaultsSerializable.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...
[0/2] Write sources
[1/2] Write swift-version-2F0A5646E1D333AE.txt
[3/8] Compiling Foil UserDefaults+Extensions.swift
[4/8] Compiling Foil FoilDefaultStorageOptional.swift
[5/8] Compiling Foil FoilDefaultStorage.swift
[6/8] Emitting module Foil
[7/8] Compiling Foil UserDefaultsSerializable.swift
[8/8] Compiling Foil ObserverTrampoline.swift
Build complete! (4.84s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Foil",
  "name" : "Foil",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    },
    {
      "name" : "macos",
      "version" : "11.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "Foil",
      "targets" : [
        "Foil"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "6"
  ],
  "targets" : [
    {
      "c99name" : "FoilTests",
      "module_type" : "SwiftTarget",
      "name" : "FoilTests",
      "path" : "Tests",
      "sources" : [
        "IntegrationTests.swift",
        "ObservationTests.swift",
        "PropertyWrapperTests.swift",
        "TestSettings.swift",
        "UserDefaults+Extensions.swift"
      ],
      "target_dependencies" : [
        "Foil"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Foil",
      "module_type" : "SwiftTarget",
      "name" : "Foil",
      "path" : "Sources",
      "product_memberships" : [
        "Foil"
      ],
      "sources" : [
        "FoilDefaultStorage.swift",
        "FoilDefaultStorageOptional.swift",
        "ObserverTrampoline.swift",
        "UserDefaults+Extensions.swift",
        "UserDefaultsSerializable.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Done.