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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 ThreadExtensions, reference main (4122ba), with Swift 6.1 for macOS (SPM) on 26 Apr 2025 09:46:45 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 -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: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/elegantchaos/ThreadExtensions.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/elegantchaos/ThreadExtensions
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 4122ba9 added license
Cloned https://github.com/elegantchaos/ThreadExtensions.git
Revision (git rev-parse @):
4122ba90ffd6dbd1a09e78cb3c5a096042ba61d4
SUCCESS checkout https://github.com/elegantchaos/ThreadExtensions.git at main
Fetching https://github.com/elegantchaos/XCTestExtensions.git
[1/571] Fetching xctestextensions
Fetched https://github.com/elegantchaos/XCTestExtensions.git from cache (0.66s)
Computing version for https://github.com/elegantchaos/XCTestExtensions.git
Computed https://github.com/elegantchaos/XCTestExtensions.git at 1.1.2 (1.28s)
Creating working copy for https://github.com/elegantchaos/XCTestExtensions.git
Working copy of https://github.com/elegantchaos/XCTestExtensions.git resolved at 1.1.2
========================================
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": "threadextensions",
      "name": "ThreadExtensions",
      "url": "https://github.com/elegantchaos/ThreadExtensions.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/ThreadExtensions",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/elegantchaos/ThreadExtensions.git
[1/42] Fetching threadextensions
Fetched https://github.com/elegantchaos/ThreadExtensions.git from cache (0.51s)
Creating working copy for https://github.com/elegantchaos/ThreadExtensions.git
Working copy of https://github.com/elegantchaos/ThreadExtensions.git resolved at main (4122ba9)
warning: '.resolve-product-dependencies': dependency 'threadextensions' 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/elegantchaos/ThreadExtensions.git
https://github.com/elegantchaos/ThreadExtensions.git
{
  "dependencies" : [
    {
      "identity" : "xctestextensions",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.1.2",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/XCTestExtensions.git"
    }
  ],
  "manifest_display_name" : "ThreadExtensions",
  "name" : "ThreadExtensions",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    }
  ],
  "products" : [
    {
      "name" : "ThreadExtensions",
      "targets" : [
        "ThreadExtensions"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ThreadExtensionsTests",
      "module_type" : "SwiftTarget",
      "name" : "ThreadExtensionsTests",
      "path" : "Tests/ThreadExtensionsTests",
      "product_dependencies" : [
        "XCTestExtensions"
      ],
      "sources" : [
        "ThreadExtensionsTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "ThreadExtensions"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ThreadExtensions",
      "module_type" : "SwiftTarget",
      "name" : "ThreadExtensions",
      "path" : "Sources/ThreadExtensions",
      "product_memberships" : [
        "ThreadExtensions"
      ],
      "sources" : [
        "ThreadExtensions.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
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 -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-2F0A5646E1D333AE.txt
[3/4] Compiling ThreadExtensions ThreadExtensions.swift
/Users/admin/builder/spi-builder-workspace/Sources/ThreadExtensions/ThreadExtensions.swift:9:39: warning: passing non-sendable parameter 'work' to function expecting a @Sendable closure
 6 | import Foundation
 7 |
 8 | public func onMainQueue(_ work: @escaping () -> ()) {
   |                           `- note: parameter 'work' is implicitly non-sendable
 9 |     DispatchQueue.main.async(execute: work)
   |                                       `- warning: passing non-sendable parameter 'work' to function expecting a @Sendable closure
10 | }
11 |
/Users/admin/builder/spi-builder-workspace/Sources/ThreadExtensions/ThreadExtensions.swift:13:72: warning: passing non-sendable parameter 'work' to function expecting a @Sendable closure
10 | }
11 |
12 | public func onMainQueue(after seconds: TimeInterval, _ work: @escaping () -> ()) {
   |                                                        `- note: parameter 'work' is implicitly non-sendable
13 |     DispatchQueue.main.asyncAfter(deadline: .now() + seconds, execute: work)
   |                                                                        `- warning: passing non-sendable parameter 'work' to function expecting a @Sendable closure
14 | }
15 |
[4/4] Emitting module ThreadExtensions
Build complete! (4.47s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "xctestextensions",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.1.2",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/elegantchaos/XCTestExtensions.git"
    }
  ],
  "manifest_display_name" : "ThreadExtensions",
  "name" : "ThreadExtensions",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    }
  ],
  "products" : [
    {
      "name" : "ThreadExtensions",
      "targets" : [
        "ThreadExtensions"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ThreadExtensionsTests",
      "module_type" : "SwiftTarget",
      "name" : "ThreadExtensionsTests",
      "path" : "Tests/ThreadExtensionsTests",
      "product_dependencies" : [
        "XCTestExtensions"
      ],
      "sources" : [
        "ThreadExtensionsTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "ThreadExtensions"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ThreadExtensions",
      "module_type" : "SwiftTarget",
      "name" : "ThreadExtensions",
      "path" : "Sources/ThreadExtensions",
      "product_memberships" : [
        "ThreadExtensions"
      ],
      "sources" : [
        "ThreadExtensions.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
Done.