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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 FDChessboardView, reference master (2d91c8), with Swift 6.1 for Linux on 25 Apr 2025 19:16:37 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/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/fulldecent/FDChessboardView.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/fulldecent/FDChessboardView
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 2d91c86 Create swift.yml
Cloned https://github.com/fulldecent/FDChessboardView.git
Revision (git rev-parse @):
2d91c867150d13d91003475aad0515d55d4c4c95
SUCCESS checkout https://github.com/fulldecent/FDChessboardView.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/fulldecent/FDChessboardView.git
https://github.com/fulldecent/FDChessboardView.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "FDChessboardView",
  "name" : "FDChessboardView",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "FDChessboardView",
      "targets" : [
        "FDChessboardView"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "FDChessboardViewTests",
      "module_type" : "SwiftTarget",
      "name" : "FDChessboardViewTests",
      "path" : "Tests/FDChessboardViewTests",
      "sources" : [
        "FDChessboardViewTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "FDChessboardView"
      ],
      "type" : "test"
    },
    {
      "c99name" : "FDChessboardView",
      "module_type" : "SwiftTarget",
      "name" : "FDChessboardView",
      "path" : "Sources/FDChessboardView",
      "product_memberships" : [
        "FDChessboardView"
      ],
      "sources" : [
        "FDChessboardImageData.swift",
        "FDChessboardPiece.swift",
        "FDChessboardView.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/host -w "$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
[3/6] Compiling FDChessboardView FDChessboardPiece.swift
/host/spi-builder-workspace/Sources/FDChessboardView/FDChessboardView.swift:10:8: error: no such module 'UIKit'
  8 |
  9 | import Foundation
 10 | import UIKit
    |        `- error: no such module 'UIKit'
 11 |
 12 | /// The location of a square on a chess board
[4/6] Compiling FDChessboardView FDChessboardView.swift
/host/spi-builder-workspace/Sources/FDChessboardView/FDChessboardView.swift:10:8: error: no such module 'UIKit'
  8 |
  9 | import Foundation
 10 | import UIKit
    |        `- error: no such module 'UIKit'
 11 |
 12 | /// The location of a square on a chess board
error: emit-module command failed with exit code 1 (use -v to see invocation)
[5/6] Emitting module FDChessboardView
/host/spi-builder-workspace/Sources/FDChessboardView/FDChessboardView.swift:10:8: error: no such module 'UIKit'
  8 |
  9 | import Foundation
 10 | import UIKit
    |        `- error: no such module 'UIKit'
 11 |
 12 | /// The location of a square on a chess board
[6/6] Compiling FDChessboardView FDChessboardImageData.swift
/host/spi-builder-workspace/Sources/FDChessboardView/FDChessboardView.swift:10:8: error: no such module 'UIKit'
  8 |
  9 | import Foundation
 10 | import UIKit
    |        `- error: no such module 'UIKit'
 11 |
 12 | /// The location of a square on a chess board
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/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
[2/5] Compiling FDChessboardView FDChessboardPiece.swift
/host/spi-builder-workspace/Sources/FDChessboardView/FDChessboardView.swift:10:8: error: no such module 'UIKit'
  8 |
  9 | import Foundation
 10 | import UIKit
    |        `- error: no such module 'UIKit'
 11 |
 12 | /// The location of a square on a chess board
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/5] Emitting module FDChessboardView
/host/spi-builder-workspace/Sources/FDChessboardView/FDChessboardView.swift:10:8: error: no such module 'UIKit'
  8 |
  9 | import Foundation
 10 | import UIKit
    |        `- error: no such module 'UIKit'
 11 |
 12 | /// The location of a square on a chess board
[4/5] Compiling FDChessboardView FDChessboardImageData.swift
/host/spi-builder-workspace/Sources/FDChessboardView/FDChessboardView.swift:10:8: error: no such module 'UIKit'
  8 |
  9 | import Foundation
 10 | import UIKit
    |        `- error: no such module 'UIKit'
 11 |
 12 | /// The location of a square on a chess board
[5/5] Compiling FDChessboardView FDChessboardView.swift
/host/spi-builder-workspace/Sources/FDChessboardView/FDChessboardView.swift:10:8: error: no such module 'UIKit'
  8 |
  9 | import Foundation
 10 | import UIKit
    |        `- error: no such module 'UIKit'
 11 |
 12 | /// The location of a square on a chess board
BUILD FAILURE 6.1 linux