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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 Skewer, reference master (319cc6), with Swift 6.0 for macOS (SPM) on 24 Mar 2025 09:49:30 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 -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures

Build Log

========================================
RunAll
========================================
Builder version: 4.60.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/jordanekay/Skewer.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/jordanekay/Skewer
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 319cc67 Update README.md
Cloned https://github.com/jordanekay/Skewer.git
Revision (git rev-parse @):
319cc67026eb41b55e3719d83c3b6f753867541f
SUCCESS checkout https://github.com/jordanekay/Skewer.git at master
========================================
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": "skewer",
      "name": "Skewer",
      "url": "https://github.com/jordanekay/Skewer.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Skewer",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/jordanekay/Skewer.git
[1/164] Fetching skewer
Fetched https://github.com/jordanekay/Skewer.git from cache (0.60s)
Creating working copy for https://github.com/jordanekay/Skewer.git
Working copy of https://github.com/jordanekay/Skewer.git resolved at master (319cc67)
warning: '.resolve-product-dependencies': dependency 'skewer' 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/jordanekay/Skewer.git
https://github.com/jordanekay/Skewer.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Skewer",
  "name" : "Skewer",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "Skewer",
      "targets" : [
        "Skewer"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SkewerTests",
      "module_type" : "SwiftTarget",
      "name" : "SkewerTests",
      "path" : "Tests/SkewerTests",
      "sources" : [
        "DecodingTests.swift",
        "EncodingTests.swift"
      ],
      "target_dependencies" : [
        "Skewer"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Skewer",
      "module_type" : "SwiftTarget",
      "name" : "Skewer",
      "path" : "Sources/Skewer",
      "product_memberships" : [
        "Skewer"
      ],
      "sources" : [
        "AnyKey.swift",
        "ComponentTransform.swift",
        "Conversion.swift",
        "Hyphen.swift",
        "KeyDecodingStrategy.swift",
        "KeyEncodingStrategy.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
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 -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-5BDAB9E9C0126B9D.txt
[3/9] Compiling Skewer ComponentTransform.swift
[4/9] Compiling Skewer AnyKey.swift
[5/9] Emitting module Skewer
[6/9] Compiling Skewer Hyphen.swift
[7/9] Compiling Skewer KeyDecodingStrategy.swift
/Users/admin/builder/spi-builder-workspace/Sources/Skewer/KeyDecodingStrategy.swift:19:31: warning: capture of 'conversion' with non-sendable type '(String) -> String' in a `@Sendable` closure
17 | 		.custom { keys in
18 | 			let stringValue = keys.last!.stringValue
19 | 			let convertedStringValue = conversion(stringValue)
   |                               |- warning: capture of 'conversion' with non-sendable type '(String) -> String' in a `@Sendable` closure
   |                               `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
20 | 			return AnyKey(stringValue: convertedStringValue)!
21 | 		}
[8/9] Compiling Skewer KeyEncodingStrategy.swift
/Users/admin/builder/spi-builder-workspace/Sources/Skewer/KeyEncodingStrategy.swift:19:31: warning: capture of 'conversion' with non-sendable type '(String) -> String' in a `@Sendable` closure
17 | 		.custom { keys in
18 | 			let stringValue = keys.last!.stringValue
19 | 			let convertedStringValue = conversion(stringValue)
   |                               |- warning: capture of 'conversion' with non-sendable type '(String) -> String' in a `@Sendable` closure
   |                               `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
20 | 			return AnyKey(stringValue: convertedStringValue)!
21 | 		}
[9/9] Compiling Skewer Conversion.swift
Build complete! (6.66s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Skewer",
  "name" : "Skewer",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "Skewer",
      "targets" : [
        "Skewer"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SkewerTests",
      "module_type" : "SwiftTarget",
      "name" : "SkewerTests",
      "path" : "Tests/SkewerTests",
      "sources" : [
        "DecodingTests.swift",
        "EncodingTests.swift"
      ],
      "target_dependencies" : [
        "Skewer"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Skewer",
      "module_type" : "SwiftTarget",
      "name" : "Skewer",
      "path" : "Sources/Skewer",
      "product_memberships" : [
        "Skewer"
      ],
      "sources" : [
        "AnyKey.swift",
        "ComponentTransform.swift",
        "Conversion.swift",
        "Hyphen.swift",
        "KeyDecodingStrategy.swift",
        "KeyEncodingStrategy.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
Done.