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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 GzipSwift, reference main (e0f411), with Swift 6.1 for macOS (SPM) on 28 Apr 2025 23:03:36 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: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/1024jp/GzipSwift.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/1024jp/GzipSwift
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at e0f4117 Update codeql.yml
Cloned https://github.com/1024jp/GzipSwift.git
Revision (git rev-parse @):
e0f41175a8b3fa051fccebc89629e6e1dee42026
SUCCESS checkout https://github.com/1024jp/GzipSwift.git at main
warning: 'spi-builder-workspace': /Users/admin/builder/spi-builder-workspace/Package.swift:5:15: warning: 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageVersions:cLanguageStandard:cxxLanguageStandard:)' is deprecated: replaced by 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageModes:cLanguageStandard:cxxLanguageStandard:)'
 3 | import PackageDescription
 4 |
 5 | let package = Package(
   |               |- warning: 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageVersions:cLanguageStandard:cxxLanguageStandard:)' is deprecated: replaced by 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageModes:cLanguageStandard:cxxLanguageStandard:)'
   |               `- note: use 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageModes:cLanguageStandard:cxxLanguageStandard:)' instead
 6 |     name: "GzipSwift",
 7 |     products: [
========================================
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": "gzipswift",
      "name": "GzipSwift",
      "url": "https://github.com/1024jp/GzipSwift.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/GzipSwift",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/1024jp/GzipSwift.git
[1/1549] Fetching gzipswift
Fetched https://github.com/1024jp/GzipSwift.git from cache (0.81s)
warning: 'gzipswift': /Package.swift:5:15: warning: 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageVersions:cLanguageStandard:cxxLanguageStandard:)' is deprecated: replaced by 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageModes:cLanguageStandard:cxxLanguageStandard:)'
 3 | import PackageDescription
 4 |
 5 | let package = Package(
   |               |- warning: 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageVersions:cLanguageStandard:cxxLanguageStandard:)' is deprecated: replaced by 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageModes:cLanguageStandard:cxxLanguageStandard:)'
   |               `- note: use 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageModes:cLanguageStandard:cxxLanguageStandard:)' instead
 6 |     name: "GzipSwift",
 7 |     products: [
Creating working copy for https://github.com/1024jp/GzipSwift.git
Working copy of https://github.com/1024jp/GzipSwift.git resolved at main (e0f4117)
warning: 'gzipswift': /Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/GzipSwift/Package.swift:5:15: warning: 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageVersions:cLanguageStandard:cxxLanguageStandard:)' is deprecated: replaced by 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageModes:cLanguageStandard:cxxLanguageStandard:)'
 3 | import PackageDescription
 4 |
 5 | let package = Package(
   |               |- warning: 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageVersions:cLanguageStandard:cxxLanguageStandard:)' is deprecated: replaced by 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageModes:cLanguageStandard:cxxLanguageStandard:)'
   |               `- note: use 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageModes:cLanguageStandard:cxxLanguageStandard:)' instead
 6 |     name: "GzipSwift",
 7 |     products: [
warning: '.resolve-product-dependencies': dependency 'gzipswift' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/1024jp/GzipSwift.git
https://github.com/1024jp/GzipSwift.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "GzipSwift",
  "name" : "GzipSwift",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Gzip",
      "targets" : [
        "Gzip"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "6"
  ],
  "targets" : [
    {
      "c99name" : "system_zlib",
      "module_type" : "ClangTarget",
      "name" : "system-zlib",
      "path" : "Sources/system-zlib",
      "product_memberships" : [
        "Gzip"
      ],
      "sources" : [
        "anchor.c"
      ],
      "type" : "library"
    },
    {
      "c99name" : "GzipTests",
      "module_type" : "SwiftTarget",
      "name" : "GzipTests",
      "path" : "Tests/GzipTests",
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/Tests/GzipTests/test.txt.gz",
          "rule" : {
            "copy" : {
            }
          }
        }
      ],
      "sources" : [
        "GzipTests.swift"
      ],
      "target_dependencies" : [
        "Gzip"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Gzip",
      "module_type" : "SwiftTarget",
      "name" : "Gzip",
      "path" : "Sources/Gzip",
      "product_memberships" : [
        "Gzip"
      ],
      "sources" : [
        "Data+Gzip.swift"
      ],
      "target_dependencies" : [
        "system-zlib"
      ],
      "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
[1/3] Write swift-version-2F0A5646E1D333AE.txt
[2/3] Compiling system-zlib anchor.c
[4/5] Emitting module Gzip
[5/5] Compiling Gzip Data+Gzip.swift
/Users/admin/builder/spi-builder-workspace/Sources/Gzip/Data+Gzip.swift:116:43: warning: 'init(validatingUTF8:)' is deprecated: replaced by 'String.init(validatingCString:)'
114 |     internal init(code: Int32, msg: UnsafePointer<CChar>?) {
115 |
116 |         self.message = msg.flatMap(String.init(validatingUTF8:)) ?? "Unknown gzip error"
    |                                           |- warning: 'init(validatingUTF8:)' is deprecated: replaced by 'String.init(validatingCString:)'
    |                                           `- note: use 'String.init(validatingCString:)' instead
117 |         self.kind = Kind(code: code)
118 |     }
Build complete! (4.44s)
warning: 'spi-builder-workspace': /Users/admin/builder/spi-builder-workspace/Package.swift:5:15: warning: 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageVersions:cLanguageStandard:cxxLanguageStandard:)' is deprecated: replaced by 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageModes:cLanguageStandard:cxxLanguageStandard:)'
 3 | import PackageDescription
 4 |
 5 | let package = Package(
   |               |- warning: 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageVersions:cLanguageStandard:cxxLanguageStandard:)' is deprecated: replaced by 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageModes:cLanguageStandard:cxxLanguageStandard:)'
   |               `- note: use 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageModes:cLanguageStandard:cxxLanguageStandard:)' instead
 6 |     name: "GzipSwift",
 7 |     products: [
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "GzipSwift",
  "name" : "GzipSwift",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Gzip",
      "targets" : [
        "Gzip"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "6"
  ],
  "targets" : [
    {
      "c99name" : "system_zlib",
      "module_type" : "ClangTarget",
      "name" : "system-zlib",
      "path" : "Sources/system-zlib",
      "product_memberships" : [
        "Gzip"
      ],
      "sources" : [
        "anchor.c"
      ],
      "type" : "library"
    },
    {
      "c99name" : "GzipTests",
      "module_type" : "SwiftTarget",
      "name" : "GzipTests",
      "path" : "Tests/GzipTests",
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/Tests/GzipTests/test.txt.gz",
          "rule" : {
            "copy" : {
            }
          }
        }
      ],
      "sources" : [
        "GzipTests.swift"
      ],
      "target_dependencies" : [
        "Gzip"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Gzip",
      "module_type" : "SwiftTarget",
      "name" : "Gzip",
      "path" : "Sources/Gzip",
      "product_memberships" : [
        "Gzip"
      ],
      "sources" : [
        "Data+Gzip.swift"
      ],
      "target_dependencies" : [
        "system-zlib"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
warning: 'spi-builder-workspace': /Users/admin/builder/spi-builder-workspace/Package.swift:5:15: warning: 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageVersions:cLanguageStandard:cxxLanguageStandard:)' is deprecated: replaced by 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageModes:cLanguageStandard:cxxLanguageStandard:)'
 3 | import PackageDescription
 4 |
 5 | let package = Package(
   |               |- warning: 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageVersions:cLanguageStandard:cxxLanguageStandard:)' is deprecated: replaced by 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageModes:cLanguageStandard:cxxLanguageStandard:)'
   |               `- note: use 'init(name:defaultLocalization:platforms:pkgConfig:providers:products:dependencies:targets:swiftLanguageModes:cLanguageStandard:cxxLanguageStandard:)' instead
 6 |     name: "GzipSwift",
 7 |     products: [
Done.