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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

Failed to build CircularProgress, reference v3.0.1 (8bb9dd), with Swift 6.1 for Linux on 27 Apr 2025 07:00:59 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-2":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/sindresorhus/CircularProgress.git
Reference: v3.0.1
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/CircularProgress
 * tag               v3.0.1     -> FETCH_HEAD
HEAD is now at 8bb9dd2 3.0.1
Cloned https://github.com/sindresorhus/CircularProgress.git
Revision (git rev-parse @):
8bb9dd2820b1cc123f2629c86c569c9f6e5edb66
SUCCESS checkout https://github.com/sindresorhus/CircularProgress.git at v3.0.1
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/sindresorhus/CircularProgress.git
https://github.com/sindresorhus/CircularProgress.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "CircularProgress",
  "name" : "CircularProgress",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "CircularProgress",
      "targets" : [
        "CircularProgress"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CircularProgress",
      "module_type" : "SwiftTarget",
      "name" : "CircularProgress",
      "path" : "Sources/CircularProgress",
      "product_memberships" : [
        "CircularProgress"
      ],
      "sources" : [
        "CheckmarkView.swift",
        "CircularProgress.swift",
        "Utilities.swift",
        "Vendored/CustomButton+Utilities.swift",
        "Vendored/CustomButton.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.7"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-2":/host -w "$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
[3/8] Compiling CircularProgress CustomButton.swift
/host/spi-builder-workspace/Sources/CircularProgress/CheckmarkView.swift:1:8: error: no such module 'Cocoa'
 1 | import Cocoa
   |        `- error: no such module 'Cocoa'
 2 |
 3 | final class CheckmarkView: NSView {
[4/8] Compiling CircularProgress CustomButton+Utilities.swift
/host/spi-builder-workspace/Sources/CircularProgress/CheckmarkView.swift:1:8: error: no such module 'Cocoa'
 1 | import Cocoa
   |        `- error: no such module 'Cocoa'
 2 |
 3 | final class CheckmarkView: NSView {
error: emit-module command failed with exit code 1 (use -v to see invocation)
[5/8] Emitting module CircularProgress
/host/spi-builder-workspace/Sources/CircularProgress/CheckmarkView.swift:1:8: error: no such module 'Cocoa'
 1 | import Cocoa
   |        `- error: no such module 'Cocoa'
 2 |
 3 | final class CheckmarkView: NSView {
[6/8] Compiling CircularProgress Utilities.swift
/host/spi-builder-workspace/Sources/CircularProgress/CheckmarkView.swift:1:8: error: no such module 'Cocoa'
 1 | import Cocoa
   |        `- error: no such module 'Cocoa'
 2 |
 3 | final class CheckmarkView: NSView {
[7/8] Compiling CircularProgress CheckmarkView.swift
/host/spi-builder-workspace/Sources/CircularProgress/CheckmarkView.swift:1:8: error: no such module 'Cocoa'
 1 | import Cocoa
   |        `- error: no such module 'Cocoa'
 2 |
 3 | final class CheckmarkView: NSView {
[8/8] Compiling CircularProgress CircularProgress.swift
/host/spi-builder-workspace/Sources/CircularProgress/CheckmarkView.swift:1:8: error: no such module 'Cocoa'
 1 | import Cocoa
   |        `- error: no such module 'Cocoa'
 2 |
 3 | final class CheckmarkView: NSView {
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-2":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 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
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[2/7] Emitting module CircularProgress
/host/spi-builder-workspace/Sources/CircularProgress/CheckmarkView.swift:1:8: error: no such module 'Cocoa'
 1 | import Cocoa
   |        `- error: no such module 'Cocoa'
 2 |
 3 | final class CheckmarkView: NSView {
[3/7] Compiling CircularProgress CheckmarkView.swift
/host/spi-builder-workspace/Sources/CircularProgress/CheckmarkView.swift:1:8: error: no such module 'Cocoa'
 1 | import Cocoa
   |        `- error: no such module 'Cocoa'
 2 |
 3 | final class CheckmarkView: NSView {
[4/7] Compiling CircularProgress CustomButton+Utilities.swift
/host/spi-builder-workspace/Sources/CircularProgress/CheckmarkView.swift:1:8: error: no such module 'Cocoa'
 1 | import Cocoa
   |        `- error: no such module 'Cocoa'
 2 |
 3 | final class CheckmarkView: NSView {
[5/7] Compiling CircularProgress Utilities.swift
/host/spi-builder-workspace/Sources/CircularProgress/CheckmarkView.swift:1:8: error: no such module 'Cocoa'
 1 | import Cocoa
   |        `- error: no such module 'Cocoa'
 2 |
 3 | final class CheckmarkView: NSView {
[6/7] Compiling CircularProgress CustomButton.swift
/host/spi-builder-workspace/Sources/CircularProgress/CheckmarkView.swift:1:8: error: no such module 'Cocoa'
 1 | import Cocoa
   |        `- error: no such module 'Cocoa'
 2 |
 3 | final class CheckmarkView: NSView {
[7/7] Compiling CircularProgress CircularProgress.swift
/host/spi-builder-workspace/Sources/CircularProgress/CheckmarkView.swift:1:8: error: no such module 'Cocoa'
 1 | import Cocoa
   |        `- error: no such module 'Cocoa'
 2 |
 3 | final class CheckmarkView: NSView {
BUILD FAILURE 6.1 linux