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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 Chronometer, reference v0.1.12 (d21b89), with Swift 6.0 for Linux on 5 Nov 2024 14:15:52 UTC.

Swift 6 data race errors: 2

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/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 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.56.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/KittyMac/Chronometer.git
Reference: v0.1.12
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/KittyMac/Chronometer
 * tag               v0.1.12    -> FETCH_HEAD
HEAD is now at d21b89e protect threaded access to allDateFormats
Cloned https://github.com/KittyMac/Chronometer.git
Revision (git rev-parse @):
d21b89e5cb5929b5175bdb3ad710a52cbf497eaa
SUCCESS checkout https://github.com/KittyMac/Chronometer.git at v0.1.12
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.0
Building package at path:  $PWD
https://github.com/KittyMac/Chronometer.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$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 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] Emitting module Chronometer
/host/spi-builder-workspace/Sources/Chronometer/Chronometer.swift:73:17: warning: var 'allDateFormats' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 71 | }
 72 |
 73 | fileprivate var allDateFormats = [DateFormat]()
    |                 |- warning: var 'allDateFormats' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                 |- note: convert 'allDateFormats' to a 'let' constant to make 'Sendable' shared state immutable
    |                 |- note: annotate 'allDateFormats' 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
 74 | fileprivate var allDateFormatsLock = NSLock()
 75 | fileprivate func initDateFormats() {
/host/spi-builder-workspace/Sources/Chronometer/Chronometer.swift:74:17: warning: var 'allDateFormatsLock' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 72 |
 73 | fileprivate var allDateFormats = [DateFormat]()
 74 | fileprivate var allDateFormatsLock = NSLock()
    |                 |- warning: var 'allDateFormatsLock' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                 |- note: convert 'allDateFormatsLock' to a 'let' constant to make 'Sendable' shared state immutable
    |                 |- note: annotate 'allDateFormatsLock' 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
 75 | fileprivate func initDateFormats() {
 76 |     guard allDateFormats.count == 0 else { return }
[4/4] Compiling Chronometer Chronometer.swift
/host/spi-builder-workspace/Sources/Chronometer/Chronometer.swift:73:17: warning: var 'allDateFormats' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 71 | }
 72 |
 73 | fileprivate var allDateFormats = [DateFormat]()
    |                 |- warning: var 'allDateFormats' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                 |- note: convert 'allDateFormats' to a 'let' constant to make 'Sendable' shared state immutable
    |                 |- note: annotate 'allDateFormats' 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
 74 | fileprivate var allDateFormatsLock = NSLock()
 75 | fileprivate func initDateFormats() {
/host/spi-builder-workspace/Sources/Chronometer/Chronometer.swift:74:17: warning: var 'allDateFormatsLock' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 72 |
 73 | fileprivate var allDateFormats = [DateFormat]()
 74 | fileprivate var allDateFormatsLock = NSLock()
    |                 |- warning: var 'allDateFormatsLock' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                 |- note: convert 'allDateFormatsLock' to a 'let' constant to make 'Sendable' shared state immutable
    |                 |- note: annotate 'allDateFormatsLock' 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
 75 | fileprivate func initDateFormats() {
 76 |     guard allDateFormats.count == 0 else { return }
Build complete! (12.05s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Chronometer",
  "name" : "Chronometer",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    },
    {
      "name" : "ios",
      "version" : "11.0"
    }
  ],
  "products" : [
    {
      "name" : "Chronometer",
      "targets" : [
        "Chronometer"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ChronometerTests",
      "module_type" : "SwiftTarget",
      "name" : "ChronometerTests",
      "path" : "Tests/ChronometerTests",
      "sources" : [
        "Tests.swift",
        "TestsBase.swift"
      ],
      "target_dependencies" : [
        "Chronometer"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Chronometer",
      "module_type" : "SwiftTarget",
      "name" : "Chronometer",
      "path" : "Sources/Chronometer",
      "product_memberships" : [
        "Chronometer"
      ],
      "sources" : [
        "Chronometer.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
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.