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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 SwiftCheck, reference master (748359), with Swift 6.0 for macOS (SPM) on 4 Nov 2024 02:57:25 UTC.

Swift 6 data race errors: 1

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.56.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/bow-swift/SwiftCheck.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/bow-swift/SwiftCheck
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 748359f Update Package.swift
Submodule path 'Carthage/Checkouts/FileCheck': checked out 'bd9cb30ceee1f21c02f51a7168f58471449807d8'
Submodule 'Carthage/Checkouts/FileCheck' (https://github.com/trill-lang/FileCheck.git) registered for path 'Carthage/Checkouts/FileCheck'
Cloning into '/Users/admin/builder/spi-builder-workspace/Carthage/Checkouts/FileCheck'...
Cloned https://github.com/bow-swift/SwiftCheck.git
Revision (git rev-parse @):
748359f9a95edf94d0c4664102f104f56b1ff1fb
SUCCESS checkout https://github.com/bow-swift/SwiftCheck.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": "swiftcheck",
      "name": "SwiftCheck",
      "url": "https://github.com/bow-swift/SwiftCheck.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/SwiftCheck",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/bow-swift/SwiftCheck.git
[1/4531] Fetching swiftcheck
Fetched https://github.com/bow-swift/SwiftCheck.git from cache (4.57s)
Creating working copy for https://github.com/bow-swift/SwiftCheck.git
Working copy of https://github.com/bow-swift/SwiftCheck.git resolved at master (748359f)
warning: '.resolve-product-dependencies': dependency 'swiftcheck' 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/bow-swift/SwiftCheck.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.1.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version--7754E27361AE5C74.txt
[3/17] Compiling SwiftCheck Testable.swift
[4/17] Compiling SwiftCheck Test.swift
[5/18] Compiling SwiftCheck WitnessedArbitrary.swift
[6/18] Compiling SwiftCheck Compose.swift
[7/18] Compiling SwiftCheck Gen.swift
[8/18] Compiling SwiftCheck State.swift
[9/18] Compiling SwiftCheck Lattice.swift
[10/18] Compiling SwiftCheck Modifiers.swift
[11/18] Compiling SwiftCheck Check.swift
[12/18] Compiling SwiftCheck CoArbitrary.swift
[13/18] Compiling SwiftCheck Rose.swift
[14/18] Compiling SwiftCheck Property.swift
/Users/admin/builder/spi-builder-workspace/Sources/SwiftCheck/Random.swift:103:13: warning: var 'theStdGen' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
101 | }
102 |
103 | private var theStdGen : StdGen = mkStdRNG(0)
    |             |- warning: var 'theStdGen' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: convert 'theStdGen' to a 'let' constant to make 'Sendable' shared state immutable
    |             |- note: annotate 'theStdGen' with '@MainActor' if property should only be accessed from the main actor
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
104 |
105 | /// A library-provided standard random number generator.
[15/18] Compiling SwiftCheck Random.swift
/Users/admin/builder/spi-builder-workspace/Sources/SwiftCheck/Random.swift:103:13: warning: var 'theStdGen' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
101 | }
102 |
103 | private var theStdGen : StdGen = mkStdRNG(0)
    |             |- warning: var 'theStdGen' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: convert 'theStdGen' to a 'let' constant to make 'Sendable' shared state immutable
    |             |- note: annotate 'theStdGen' with '@MainActor' if property should only be accessed from the main actor
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
104 |
105 | /// A library-provided standard random number generator.
[16/18] Compiling SwiftCheck Arbitrary.swift
[17/18] Compiling SwiftCheck Cartesian.swift
[18/18] Emitting module SwiftCheck
/Users/admin/builder/spi-builder-workspace/Sources/SwiftCheck/Random.swift:103:13: warning: var 'theStdGen' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
101 | }
102 |
103 | private var theStdGen : StdGen = mkStdRNG(0)
    |             |- warning: var 'theStdGen' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: convert 'theStdGen' to a 'let' constant to make 'Sendable' shared state immutable
    |             |- note: annotate 'theStdGen' with '@MainActor' if property should only be accessed from the main actor
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
104 |
105 | /// A library-provided standard random number generator.
Build complete! (15.09s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "SwiftCheck",
  "name" : "SwiftCheck",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SwiftCheck",
      "targets" : [
        "SwiftCheck"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SwiftCheck",
      "module_type" : "SwiftTarget",
      "name" : "SwiftCheck",
      "path" : "Sources/SwiftCheck",
      "product_memberships" : [
        "SwiftCheck"
      ],
      "sources" : [
        "Arbitrary.swift",
        "Cartesian.swift",
        "Check.swift",
        "CoArbitrary.swift",
        "Compose.swift",
        "Gen.swift",
        "Lattice.swift",
        "Modifiers.swift",
        "Property.swift",
        "Random.swift",
        "Rose.swift",
        "State.swift",
        "Test.swift",
        "Testable.swift",
        "WitnessedArbitrary.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
Done.