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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 ColorSet, reference master (a8853e), with Swift 6.1 for Linux on 25 Apr 2025 11:34:28 UTC.

Swift 6 data race errors: 0

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-3":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-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: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/fromkk/colorset.git
Reference: master
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/fromkk/colorset
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at a8853ed Merge pull request #1 from fromkk/feature/package
Cloned https://github.com/fromkk/colorset.git
Revision (git rev-parse @):
a8853ed187fc7068805f9c2e351da56adaec55dd
SUCCESS checkout https://github.com/fromkk/colorset.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/fromkk/colorset.git
https://github.com/fromkk/colorset.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "ColorSet",
  "name" : "ColorSet",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "ColorSet",
      "targets" : [
        "ColorSet"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ColorSet",
      "module_type" : "SwiftTarget",
      "name" : "ColorSet",
      "path" : "Sources",
      "product_memberships" : [
        "ColorSet"
      ],
      "sources" : [
        "ColorObservable.swift",
        "ColorObservation.swift",
        "ColorObservationBag.swift",
        "ColorType.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-3":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-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-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/7] Compiling ColorSet ColorType.swift
[4/7] Compiling ColorSet ColorObservationBag.swift
[5/7] Compiling ColorSet ColorObservable.swift
/host/spi-builder-workspace/Sources/ColorObservable.swift:41:17: warning: capture of 'callback' with non-sendable type '(T) -> Void' in a '@Sendable' closure; this is an error in the Swift 6 language mode
39 |             notificationCenter.addObserver(forName: didChange, object: nil, queue: .main, using: { notification in
40 |                 guard let value = notification.object as? T else { return }
41 |                 callback(value)
   |                 |- warning: capture of 'callback' with non-sendable type '(T) -> Void' 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'
42 |             }),
43 |             notificationCenter: notificationCenter
[6/7] Emitting module ColorSet
[7/7] Compiling ColorSet ColorObservation.swift
Build complete! (10.14s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "ColorSet",
  "name" : "ColorSet",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "ColorSet",
      "targets" : [
        "ColorSet"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ColorSet",
      "module_type" : "SwiftTarget",
      "name" : "ColorSet",
      "path" : "Sources",
      "product_memberships" : [
        "ColorSet"
      ],
      "sources" : [
        "ColorObservable.swift",
        "ColorObservation.swift",
        "ColorObservationBag.swift",
        "ColorType.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Done.