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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 Repeat, reference 0.6.0 (9df757), with Swift 6.1 for macOS (SPM) on 24 Apr 2025 10:23:16 UTC.

Swift 6 data race errors: 1

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/malcommac/Repeat.git
Reference: 0.6.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/malcommac/Repeat
 * tag               0.6.0      -> FETCH_HEAD
HEAD is now at 9df757d Merge branch 'release/0.6.0'
Cloned https://github.com/malcommac/Repeat.git
Revision (git rev-parse @):
9df757d0936c15dfd9d01067766fab87e927f838
SUCCESS checkout https://github.com/malcommac/Repeat.git at 0.6.0
========================================
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": "repeat",
      "name": "Repeat",
      "url": "https://github.com/malcommac/Repeat.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Repeat",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/malcommac/Repeat.git
[1/548] Fetching repeat
Fetched https://github.com/malcommac/Repeat.git from cache (0.81s)
Creating working copy for https://github.com/malcommac/Repeat.git
Working copy of https://github.com/malcommac/Repeat.git resolved at 0.6.0 (9df757d)
warning: '.resolve-product-dependencies': dependency 'repeat' 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/malcommac/Repeat.git
https://github.com/malcommac/Repeat.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Repeat",
  "name" : "Repeat",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Repeat",
      "targets" : [
        "Repeat"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "RepeatTests",
      "module_type" : "SwiftTarget",
      "name" : "RepeatTests",
      "path" : "Tests/RepeatTests",
      "sources" : [
        "RepeatTests.swift"
      ],
      "target_dependencies" : [
        "Repeat"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Repeat",
      "module_type" : "SwiftTarget",
      "name" : "Repeat",
      "path" : "Sources/Repeat",
      "product_memberships" : [
        "Repeat"
      ],
      "sources" : [
        "Debouncer.swift",
        "Repeater.swift",
        "Throttler.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
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 -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
[3/6] Compiling Repeat Repeater.swift
[4/6] Emitting module Repeat
/Users/admin/builder/spi-builder-workspace/Sources/Repeat/Debouncer.swift:40:9: warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
38 |
39 | 	/// Delay interval
40 | 	private (set) public var delay: Repeater.Interval
   |         `- warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
41 |
42 | 	/// Callback to activate
[5/6] Compiling Repeat Throttler.swift
[6/6] Compiling Repeat Debouncer.swift
/Users/admin/builder/spi-builder-workspace/Sources/Repeat/Debouncer.swift:40:9: warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
38 |
39 | 	/// Delay interval
40 | 	private (set) public var delay: Repeater.Interval
   |         `- warning: extraneous whitespace between attribute name and '('; this is an error in the Swift 6 language mode
41 |
42 | 	/// Callback to activate
Build complete! (4.19s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Repeat",
  "name" : "Repeat",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Repeat",
      "targets" : [
        "Repeat"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "RepeatTests",
      "module_type" : "SwiftTarget",
      "name" : "RepeatTests",
      "path" : "Tests/RepeatTests",
      "sources" : [
        "RepeatTests.swift"
      ],
      "target_dependencies" : [
        "Repeat"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Repeat",
      "module_type" : "SwiftTarget",
      "name" : "Repeat",
      "path" : "Sources/Repeat",
      "product_memberships" : [
        "Repeat"
      ],
      "sources" : [
        "Debouncer.swift",
        "Repeater.swift",
        "Throttler.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
Done.