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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 Percentage, reference main (fb281e), with Swift 6.0 for Linux on 29 Nov 2024 00:52:48 UTC.

Swift 6 data race errors: 1

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -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 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.58.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/sindresorhus/Percentage.git
Reference: main
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: 	git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: 	git branch -m <name>
From https://github.com/sindresorhus/Percentage
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at fb281e5 1.2.0
Cloned https://github.com/sindresorhus/Percentage.git
Revision (git rev-parse @):
fb281e5d511c848b719285f0c7b44fd015d88ecd
SUCCESS checkout https://github.com/sindresorhus/Percentage.git at main
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.0
Building package at path:  $PWD
https://github.com/sindresorhus/Percentage.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -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 2>&1
basic-6.0-latest: Pulling from finestructure/spi-images
Digest: sha256:47d26c99ca4f1ac0a332c85fd5b13ff4390e72115219984a57a68fe9d1063a05
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.0-latest
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/4] Compiling Percentage Percentage.swift
/host/spi-builder-workspace/Sources/Percentage/Percentage.swift:192:22: warning: static property 'formatter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
190 | extension Percentage: CustomStringConvertible {
191 | 	// Note: It's a `var` for testing.
192 | 	internal static var formatter: NumberFormatter = {
    |                      |- warning: static property 'formatter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                      |- note: convert 'formatter' to a 'let' constant to make 'Sendable' shared state immutable
    |                      |- note: annotate 'formatter' 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
193 | 		let formatter = NumberFormatter()
194 | 		formatter.numberStyle = .percent
[4/4] Emitting module Percentage
/host/spi-builder-workspace/Sources/Percentage/Percentage.swift:192:22: warning: static property 'formatter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
190 | extension Percentage: CustomStringConvertible {
191 | 	// Note: It's a `var` for testing.
192 | 	internal static var formatter: NumberFormatter = {
    |                      |- warning: static property 'formatter' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                      |- note: convert 'formatter' to a 'let' constant to make 'Sendable' shared state immutable
    |                      |- note: annotate 'formatter' 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
193 | 		let formatter = NumberFormatter()
194 | 		formatter.numberStyle = .percent
Build complete! (8.30s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Percentage",
  "name" : "Percentage",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Percentage",
      "targets" : [
        "Percentage"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "PercentageTests",
      "module_type" : "SwiftTarget",
      "name" : "PercentageTests",
      "path" : "Tests/PercentageTests",
      "sources" : [
        "PercentageTests.swift"
      ],
      "target_dependencies" : [
        "Percentage"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Percentage",
      "module_type" : "SwiftTarget",
      "name" : "Percentage",
      "path" : "Sources/Percentage",
      "product_memberships" : [
        "Percentage"
      ],
      "sources" : [
        "Percentage.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.4"
}
basic-6.0-latest: Pulling from finestructure/spi-images
Digest: sha256:47d26c99ca4f1ac0a332c85fd5b13ff4390e72115219984a57a68fe9d1063a05
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.0-latest
Done.