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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 PerfectRepeater, reference master (f1d7e3), with Swift 6.0 for macOS (SPM) on 31 Oct 2024 15:04:36 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/perfectlysoft/perfect-repeater.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/perfectlysoft/perfect-repeater
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at f1d7e35 Updated for Swift 4 package format
Cloned https://github.com/perfectlysoft/perfect-repeater.git
Revision (git rev-parse @):
f1d7e3536384f57d3ef0ad793c9b8f0298655ac5
SUCCESS checkout https://github.com/perfectlysoft/perfect-repeater.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": "perfect-repeater",
      "name": "PerfectRepeater",
      "url": "https://github.com/perfectlysoft/perfect-repeater.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/perfect-repeater",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/perfectlysoft/perfect-repeater.git
[3/32] Fetching perfect-repeater
Fetched https://github.com/perfectlysoft/perfect-repeater.git from cache (0.60s)
Creating working copy for https://github.com/perfectlysoft/perfect-repeater.git
Working copy of https://github.com/perfectlysoft/perfect-repeater.git resolved at master (f1d7e35)
warning: '.resolve-product-dependencies': dependency 'perfect-repeater' 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/perfectlysoft/perfect-repeater.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
[3/4] Emitting module PerfectRepeater
/Users/admin/builder/spi-builder-workspace/Sources/PerfectRepeater/Repeater.swift:26:13: warning: static property 'operationQueue' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
24 | public struct Repeater {
25 | 	// Internal queue
26 | 	static var operationQueue = DispatchQueue(label: "org.prefect")
   |             |- warning: static property 'operationQueue' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'operationQueue' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: annotate 'operationQueue' 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
27 |
28 | 	/// Exec function for scheduling
[4/4] Compiling PerfectRepeater Repeater.swift
/Users/admin/builder/spi-builder-workspace/Sources/PerfectRepeater/Repeater.swift:26:13: warning: static property 'operationQueue' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
24 | public struct Repeater {
25 | 	// Internal queue
26 | 	static var operationQueue = DispatchQueue(label: "org.prefect")
   |             |- warning: static property 'operationQueue' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'operationQueue' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: annotate 'operationQueue' 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
27 |
28 | 	/// Exec function for scheduling
/Users/admin/builder/spi-builder-workspace/Sources/PerfectRepeater/Repeater.swift:33:7: warning: capture of 'callback' with non-sendable type '() -> Bool' in a `@Sendable` closure; this is an error in the Swift 6 language mode
31 | 	public static func exec(timer: Double, callback: @escaping () -> Bool) {
32 | 		Repeater.operationQueue.asyncAfter(deadline: .now() + timer) {
33 | 			if callback() { Repeater.exec(timer:timer, callback: callback) }
   |       |- warning: capture of 'callback' with non-sendable type '() -> Bool' in a `@Sendable` closure; this is an error in the Swift 6 language mode
   |       `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
34 | 		}
35 | 	}
Build complete! (5.92s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "PerfectRepeater",
  "name" : "PerfectRepeater",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "PerfectRepeater",
      "targets" : [
        "PerfectRepeater"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "PerfectRepeater",
      "module_type" : "SwiftTarget",
      "name" : "PerfectRepeater",
      "path" : "Sources/PerfectRepeater",
      "product_memberships" : [
        "PerfectRepeater"
      ],
      "sources" : [
        "Repeater.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.1"
}
Done.