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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 LabelKit, reference 2.1.0 (51cb5c), with Swift 6.1 for Linux on 26 Apr 2025 15:36:06 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/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/edudnyk/LabelKit.git
Reference: 2.1.0
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/edudnyk/LabelKit
 * tag               2.1.0      -> FETCH_HEAD
HEAD is now at 51cb5c6 Podspec version 2.1.0.
Cloned https://github.com/edudnyk/LabelKit.git
Revision (git rev-parse @):
51cb5c686a4d139a91442ab9f8e9401430b2f417
SUCCESS checkout https://github.com/edudnyk/LabelKit.git at 2.1.0
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/edudnyk/LabelKit.git
https://github.com/edudnyk/LabelKit.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "LabelKit",
  "name" : "LabelKit",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "LabelKit",
      "targets" : [
        "LabelKit"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "LabelKitTests",
      "module_type" : "SwiftTarget",
      "name" : "LabelKitTests",
      "path" : "Tests/LabelKitTests",
      "sources" : [
        "LabelKitTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "LabelKit"
      ],
      "type" : "test"
    },
    {
      "c99name" : "LabelKit",
      "module_type" : "SwiftTarget",
      "name" : "LabelKit",
      "path" : "Sources/LabelKit",
      "product_memberships" : [
        "LabelKit"
      ],
      "sources" : [
        "LKBoundsDidChangeAction.swift",
        "LKExtensions.swift",
        "LKLabel.swift",
        "LKLabelLayer.swift",
        "LKTextDidChangeAction.swift",
        "LabelView.swift",
        "Utils.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$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
[3/10] Compiling LabelKit Utils.swift
/host/spi-builder-workspace/Sources/LabelKit/LKBoundsDidChangeAction.swift:34:8: error: no such module 'QuartzCore'
32 | //
33 |
34 | import QuartzCore
   |        `- error: no such module 'QuartzCore'
35 | import UIKit
36 |
error: emit-module command failed with exit code 1 (use -v to see invocation)
[4/10] Emitting module LabelKit
/host/spi-builder-workspace/Sources/LabelKit/LKBoundsDidChangeAction.swift:34:8: error: no such module 'QuartzCore'
32 | //
33 |
34 | import QuartzCore
   |        `- error: no such module 'QuartzCore'
35 | import UIKit
36 |
[5/10] Compiling LabelKit LKLabel.swift
/host/spi-builder-workspace/Sources/LabelKit/LKBoundsDidChangeAction.swift:34:8: error: no such module 'QuartzCore'
32 | //
33 |
34 | import QuartzCore
   |        `- error: no such module 'QuartzCore'
35 | import UIKit
36 |
[6/10] Compiling LabelKit LKExtensions.swift
/host/spi-builder-workspace/Sources/LabelKit/LKBoundsDidChangeAction.swift:34:8: error: no such module 'QuartzCore'
32 | //
33 |
34 | import QuartzCore
   |        `- error: no such module 'QuartzCore'
35 | import UIKit
36 |
[7/10] Compiling LabelKit LKBoundsDidChangeAction.swift
/host/spi-builder-workspace/Sources/LabelKit/LKBoundsDidChangeAction.swift:34:8: error: no such module 'QuartzCore'
32 | //
33 |
34 | import QuartzCore
   |        `- error: no such module 'QuartzCore'
35 | import UIKit
36 |
[8/10] Compiling LabelKit LabelView.swift
/host/spi-builder-workspace/Sources/LabelKit/LKBoundsDidChangeAction.swift:34:8: error: no such module 'QuartzCore'
32 | //
33 |
34 | import QuartzCore
   |        `- error: no such module 'QuartzCore'
35 | import UIKit
36 |
[9/10] Compiling LabelKit LKTextDidChangeAction.swift
/host/spi-builder-workspace/Sources/LabelKit/LKBoundsDidChangeAction.swift:34:8: error: no such module 'QuartzCore'
32 | //
33 |
34 | import QuartzCore
   |        `- error: no such module 'QuartzCore'
35 | import UIKit
36 |
[10/10] Compiling LabelKit LKLabelLayer.swift
/host/spi-builder-workspace/Sources/LabelKit/LKBoundsDidChangeAction.swift:34:8: error: no such module 'QuartzCore'
32 | //
33 |
34 | import QuartzCore
   |        `- error: no such module 'QuartzCore'
35 | import UIKit
36 |
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/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
[2/9] Compiling LabelKit LKBoundsDidChangeAction.swift
/host/spi-builder-workspace/Sources/LabelKit/LKBoundsDidChangeAction.swift:34:8: error: no such module 'QuartzCore'
32 | //
33 |
34 | import QuartzCore
   |        `- error: no such module 'QuartzCore'
35 | import UIKit
36 |
[3/9] Compiling LabelKit LabelView.swift
/host/spi-builder-workspace/Sources/LabelKit/LKBoundsDidChangeAction.swift:34:8: error: no such module 'QuartzCore'
32 | //
33 |
34 | import QuartzCore
   |        `- error: no such module 'QuartzCore'
35 | import UIKit
36 |
[4/9] Compiling LabelKit LKLabel.swift
/host/spi-builder-workspace/Sources/LabelKit/LKBoundsDidChangeAction.swift:34:8: error: no such module 'QuartzCore'
32 | //
33 |
34 | import QuartzCore
   |        `- error: no such module 'QuartzCore'
35 | import UIKit
36 |
[5/9] Compiling LabelKit LKExtensions.swift
/host/spi-builder-workspace/Sources/LabelKit/LKBoundsDidChangeAction.swift:34:8: error: no such module 'QuartzCore'
32 | //
33 |
34 | import QuartzCore
   |        `- error: no such module 'QuartzCore'
35 | import UIKit
36 |
[6/9] Compiling LabelKit LKLabelLayer.swift
/host/spi-builder-workspace/Sources/LabelKit/LKBoundsDidChangeAction.swift:34:8: error: no such module 'QuartzCore'
32 | //
33 |
34 | import QuartzCore
   |        `- error: no such module 'QuartzCore'
35 | import UIKit
36 |
[7/9] Compiling LabelKit Utils.swift
/host/spi-builder-workspace/Sources/LabelKit/LKBoundsDidChangeAction.swift:34:8: error: no such module 'QuartzCore'
32 | //
33 |
34 | import QuartzCore
   |        `- error: no such module 'QuartzCore'
35 | import UIKit
36 |
error: emit-module command failed with exit code 1 (use -v to see invocation)
[8/9] Emitting module LabelKit
/host/spi-builder-workspace/Sources/LabelKit/LKBoundsDidChangeAction.swift:34:8: error: no such module 'QuartzCore'
32 | //
33 |
34 | import QuartzCore
   |        `- error: no such module 'QuartzCore'
35 | import UIKit
36 |
[9/9] Compiling LabelKit LKTextDidChangeAction.swift
/host/spi-builder-workspace/Sources/LabelKit/LKBoundsDidChangeAction.swift:34:8: error: no such module 'QuartzCore'
32 | //
33 |
34 | import QuartzCore
   |        `- error: no such module 'QuartzCore'
35 | import UIKit
36 |
BUILD FAILURE 6.1 linux