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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 BigNumber, reference master (d09d98), with Swift 6.0 for macOS (SPM) on 3 Nov 2024 17:09:10 UTC.

Swift 6 data race errors: 2

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/mkrd/Swift-BigInt.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/mkrd/Swift-BigInt
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at d09d98b Sendable (#85)
Cloned https://github.com/mkrd/Swift-BigInt.git
Revision (git rev-parse @):
d09d98b6819e2860160d4f0a909ce7f4925d8926
SUCCESS checkout https://github.com/mkrd/Swift-BigInt.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": "swift-bigint",
      "name": "BigNumber",
      "url": "https://github.com/mkrd/Swift-BigInt.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Swift-BigInt",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/mkrd/Swift-BigInt.git
[1/1854] Fetching swift-bigint
Fetched https://github.com/mkrd/Swift-BigInt.git from cache (1.30s)
Creating working copy for https://github.com/mkrd/Swift-BigInt.git
Working copy of https://github.com/mkrd/Swift-BigInt.git resolved at master (d09d98b)
warning: '.resolve-product-dependencies': dependency 'swift-bigint' 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/mkrd/Swift-BigInt.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...
[0/8] Write sources
[3/8] Write Benchmarks-entitlement.plist
[4/8] Write swift-version--7754E27361AE5C74.txt
[6/10] Compiling BigNumber Swift-Big-Number-Core.swift
/Users/admin/builder/spi-builder-workspace/Sources/BigNumber/Swift-Big-Number-Core.swift:262:23: warning: static property 'stringPrefixes' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 260 |
 261 |     /// Common prefixes for different bases
 262 |     static public var stringPrefixes = [
     |                       |- warning: static property 'stringPrefixes' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: convert 'stringPrefixes' to a 'let' constant to make 'Sendable' shared state immutable
     |                       |- note: annotate 'stringPrefixes' 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
 263 |         2: "0b",
 264 |         8: "0o",
/Users/admin/builder/spi-builder-workspace/Sources/BigNumber/Swift-Big-Number-Core.swift:2495:21: warning: static property '_precision' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
2493 | 	}
2494 |
2495 | 	static private var _precision = 4
     |                     |- warning: static property '_precision' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                     |- note: convert '_precision' to a 'let' constant to make 'Sendable' shared state immutable
     |                     |- note: annotate '_precision' 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
2496 | 	/**
2497 | 	 * the global percision for all newly created values
[7/10] Emitting module BigNumber
/Users/admin/builder/spi-builder-workspace/Sources/BigNumber/Swift-Big-Number-Core.swift:262:23: warning: static property 'stringPrefixes' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 260 |
 261 |     /// Common prefixes for different bases
 262 |     static public var stringPrefixes = [
     |                       |- warning: static property 'stringPrefixes' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                       |- note: convert 'stringPrefixes' to a 'let' constant to make 'Sendable' shared state immutable
     |                       |- note: annotate 'stringPrefixes' 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
 263 |         2: "0b",
 264 |         8: "0o",
/Users/admin/builder/spi-builder-workspace/Sources/BigNumber/Swift-Big-Number-Core.swift:2495:21: warning: static property '_precision' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
2493 | 	}
2494 |
2495 | 	static private var _precision = 4
     |                     |- warning: static property '_precision' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
     |                     |- note: convert '_precision' to a 'let' constant to make 'Sendable' shared state immutable
     |                     |- note: annotate '_precision' 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
2496 | 	/**
2497 | 	 * the global percision for all newly created values
[8/19] Compiling MGTools MG SuperSwift.swift
[9/19] Compiling MGTools MG Storage.swift
[10/19] Compiling MGTools MG QueueDispatch.swift
/Users/admin/builder/spi-builder-workspace/Sources/MGTools/MG QueueDispatch.swift:25:69: warning: passing non-sendable parameter 'closure' to function expecting a @Sendable closure
19 | 		Run trailing closure after a given time in seconds in background queue.
20 | 	*/
21 | 	static public func runAfterDelay(_ seconds: Double, _ closure: @escaping () -> ())
   |                                                        `- note: parameter 'closure' is implicitly non-sendable
22 | 	{
23 | 		let queue = DispatchQueue.global()
24 |
25 | 		queue.asyncAfter(deadline: DispatchTime.now() + seconds, execute: closure)
   |                                                                     `- warning: passing non-sendable parameter 'closure' to function expecting a @Sendable closure
26 | 	}
27 |
/Users/admin/builder/spi-builder-workspace/Sources/MGTools/MG QueueDispatch.swift:40:23: warning: converting non-sendable function value to '@Sendable () -> Void' may introduce data races
38 | 		for closure in closures
39 | 		{
40 | 			queue.addOperation(closure)
   |                       `- warning: converting non-sendable function value to '@Sendable () -> Void' may introduce data races
41 | 		}
42 |
[11/19] Compiling MGTools MG Math.swift
[12/19] Compiling MGTools MG IO.swift
[13/19] Emitting module MGTools
[14/19] Compiling MGTools MG Complex.swift
/Users/admin/builder/spi-builder-workspace/Sources/MGTools/MG Complex.swift:24:19: warning: setter argument 'newValue' was never used, but the property was accessed
22 | 	{
23 | 		get { return self.re }
24 | 		set { self.re = r }
   |                   |- warning: setter argument 'newValue' was never used, but the property was accessed
   |                   `- note: did you mean to use 'newValue' instead of accessing the property's current value?
25 | 	}
26 |
/Users/admin/builder/spi-builder-workspace/Sources/MGTools/MG Complex.swift:30:19: warning: setter argument 'newValue' was never used, but the property was accessed
28 | 	{
29 | 		get { return self.im }
30 | 		set { self.im = i }
   |                   |- warning: setter argument 'newValue' was never used, but the property was accessed
   |                   `- note: did you mean to use 'newValue' instead of accessing the property's current value?
31 | 	}
32 | }
[15/19] Compiling MGTools MG Benchmark Tools.swift
[16/19] Compiling MGTools MG Matrix.swift
[17/22] Compiling Benchmarks main.swift
[18/22] Compiling Benchmarks Benchmarks.swift
[19/22] Emitting module Benchmarks
[19/22] Write Objects.LinkFileList
[20/22] Linking Benchmarks
[21/22] Applying Benchmarks
Build complete! (9.99s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "BigNumber",
  "name" : "BigNumber",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "BigNumber",
      "targets" : [
        "BigNumber"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "Benchmarks",
      "targets" : [
        "Benchmarks"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MGToolsTests",
      "module_type" : "SwiftTarget",
      "name" : "MGToolsTests",
      "path" : "Tests/MGToolsTests",
      "sources" : [
        "MG Math Tests.swift",
        "MG Matrix Tests.swift"
      ],
      "target_dependencies" : [
        "MGTools"
      ],
      "type" : "test"
    },
    {
      "c99name" : "MGTools",
      "module_type" : "SwiftTarget",
      "name" : "MGTools",
      "path" : "Sources/MGTools",
      "product_memberships" : [
        "Benchmarks"
      ],
      "sources" : [
        "MG Benchmark Tools.swift",
        "MG Complex.swift",
        "MG IO.swift",
        "MG Math.swift",
        "MG Matrix.swift",
        "MG QueueDispatch.swift",
        "MG Storage.swift",
        "MG SuperSwift.swift"
      ],
      "target_dependencies" : [
        "BigNumber"
      ],
      "type" : "library"
    },
    {
      "c99name" : "BigNumberTests",
      "module_type" : "SwiftTarget",
      "name" : "BigNumberTests",
      "path" : "Tests/BigNumberTests",
      "sources" : [
        "BDoubleTests.swift",
        "BIntTests.swift",
        "Test_Advanced_Math.swift",
        "Test_BIntMath.swift",
        "Test_Basic_Math.swift",
        "Test_Initialization.swift",
        "Test_String_Conversions.swift"
      ],
      "target_dependencies" : [
        "BigNumber",
        "MGTools"
      ],
      "type" : "test"
    },
    {
      "c99name" : "BigNumber",
      "module_type" : "SwiftTarget",
      "name" : "BigNumber",
      "path" : "Sources/BigNumber",
      "product_memberships" : [
        "BigNumber",
        "Benchmarks"
      ],
      "sources" : [
        "Swift-Big-Number-Core.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "Benchmarks",
      "module_type" : "SwiftTarget",
      "name" : "Benchmarks",
      "path" : "Sources/Benchmarks",
      "product_memberships" : [
        "Benchmarks"
      ],
      "sources" : [
        "Benchmarks.swift",
        "main.swift"
      ],
      "target_dependencies" : [
        "BigNumber",
        "MGTools"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "4.2"
}
Done.