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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 Anybar, reference master (1cff10), with Swift 6.0 for macOS (SPM) on 31 Oct 2024 08:21:25 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/kiliankoe/anybarswift.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/kiliankoe/anybarswift
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 1cff100 initial commit
Cloned https://github.com/kiliankoe/anybarswift.git
Revision (git rev-parse @):
1cff100c277414dcd1ce4925cb53d6a03df3606f
SUCCESS checkout https://github.com/kiliankoe/anybarswift.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": "anybarswift",
      "name": "Anybar",
      "url": "https://github.com/kiliankoe/anybarswift.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/anybarswift",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/kiliankoe/anybarswift.git
[1/9] Fetching anybarswift
Fetched https://github.com/kiliankoe/anybarswift.git from cache (0.62s)
Creating working copy for https://github.com/kiliankoe/anybarswift.git
Working copy of https://github.com/kiliankoe/anybarswift.git resolved at master (1cff100)
warning: '.resolve-product-dependencies': dependency 'anybarswift' 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/kiliankoe/anybarswift.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 Anybar
/Users/admin/builder/spi-builder-workspace/Sources/Anybar/Anybar.swift:10:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'Anybar' may have shared mutable state; this is an error in the Swift 6 language mode
 1 | import Foundation
 2 |
 3 | public struct Anybar {
   |               `- note: consider making struct 'Anybar' conform to the 'Sendable' protocol
 4 |     public let port: Int
 5 |
   :
 8 |     }
 9 |
10 |     public static let `default` = Anybar(port: 1738)
   |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'Anybar' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: annotate 'default' 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
11 |
12 |     public func update(with color: Color) {
[4/4] Compiling Anybar Anybar.swift
/Users/admin/builder/spi-builder-workspace/Sources/Anybar/Anybar.swift:10:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'Anybar' may have shared mutable state; this is an error in the Swift 6 language mode
 1 | import Foundation
 2 |
 3 | public struct Anybar {
   |               `- note: consider making struct 'Anybar' conform to the 'Sendable' protocol
 4 |     public let port: Int
 5 |
   :
 8 |     }
 9 |
10 |     public static let `default` = Anybar(port: 1738)
   |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'Anybar' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: annotate 'default' 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
11 |
12 |     public func update(with color: Color) {
Build complete! (5.77s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Anybar",
  "name" : "Anybar",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Anybar",
      "targets" : [
        "Anybar"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Anybar",
      "module_type" : "SwiftTarget",
      "name" : "Anybar",
      "path" : "Sources/Anybar",
      "product_memberships" : [
        "Anybar"
      ],
      "sources" : [
        "Anybar.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
Done.