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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 Snacker, reference main (e9cb90), with Swift 6.1 for Linux on 1 May 2025 02:20:00 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/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: 4.61.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/space-code/snacker.git
Reference: main
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/space-code/snacker
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at e9cb90e Bump actions/checkout from 2 to 4 (#3)
Cloned https://github.com/space-code/snacker.git
Revision (git rev-parse @):
e9cb90e857300d688b674e8ba58395900d48a08c
SUCCESS checkout https://github.com/space-code/snacker.git at main
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/space-code/snacker.git
https://github.com/space-code/snacker.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Snacker",
  "name" : "Snacker",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "17.0"
    }
  ],
  "products" : [
    {
      "name" : "Snacker",
      "targets" : [
        "Snacker"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SnackerTests",
      "module_type" : "SwiftTarget",
      "name" : "SnackerTests",
      "path" : "Tests",
      "sources" : [
        "snackerTests/snackerTests.swift"
      ],
      "target_dependencies" : [
        "Snacker"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Snacker",
      "module_type" : "SwiftTarget",
      "name" : "Snacker",
      "path" : "Sources",
      "product_memberships" : [
        "Snacker"
      ],
      "sources" : [
        "snacker/Classes/Core/Snacker/Snacker.swift",
        "snacker/Classes/Model/SnackbarAction.swift",
        "snacker/Classes/Model/SnackbarAlignment.swift",
        "snacker/Classes/Model/SnackbarData.swift",
        "snacker/Classes/Model/SnackbarInsets.swift",
        "snacker/Classes/Presentation/SnackbarController.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$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 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
warning: 'spi-builder-workspace': found 1 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
    /host/spi-builder-workspace/Sources/snacker/Resources/Media.xcassets
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/9] Emitting module Snacker
/host/spi-builder-workspace/Sources/snacker/Classes/Core/Snacker/Snacker.swift:6:8: error: no such module 'UIKit'
  4 | //
  5 |
  6 | import UIKit
    |        `- error: no such module 'UIKit'
  7 |
  8 | // MARK: - ISnacker
[4/9] Compiling Snacker Snacker.swift
/host/spi-builder-workspace/Sources/snacker/Classes/Core/Snacker/Snacker.swift:6:8: error: no such module 'UIKit'
  4 | //
  5 |
  6 | import UIKit
    |        `- error: no such module 'UIKit'
  7 |
  8 | // MARK: - ISnacker
[5/9] Compiling Snacker SnackbarAction.swift
/host/spi-builder-workspace/Sources/snacker/Classes/Core/Snacker/Snacker.swift:6:8: error: no such module 'UIKit'
  4 | //
  5 |
  6 | import UIKit
    |        `- error: no such module 'UIKit'
  7 |
  8 | // MARK: - ISnacker
[6/9] Compiling Snacker SnackbarData.swift
/host/spi-builder-workspace/Sources/snacker/Classes/Core/Snacker/Snacker.swift:6:8: error: no such module 'UIKit'
  4 | //
  5 |
  6 | import UIKit
    |        `- error: no such module 'UIKit'
  7 |
  8 | // MARK: - ISnacker
[7/9] Compiling Snacker SnackbarAlignment.swift
/host/spi-builder-workspace/Sources/snacker/Classes/Core/Snacker/Snacker.swift:6:8: error: no such module 'UIKit'
  4 | //
  5 |
  6 | import UIKit
    |        `- error: no such module 'UIKit'
  7 |
  8 | // MARK: - ISnacker
[8/9] Compiling Snacker SnackbarController.swift
/host/spi-builder-workspace/Sources/snacker/Classes/Core/Snacker/Snacker.swift:6:8: error: no such module 'UIKit'
  4 | //
  5 |
  6 | import UIKit
    |        `- error: no such module 'UIKit'
  7 |
  8 | // MARK: - ISnacker
[9/9] Compiling Snacker SnackbarInsets.swift
/host/spi-builder-workspace/Sources/snacker/Classes/Core/Snacker/Snacker.swift:6:8: error: no such module 'UIKit'
  4 | //
  5 |
  6 | import UIKit
    |        `- error: no such module 'UIKit'
  7 |
  8 | // MARK: - ISnacker
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/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
warning: 'spi-builder-workspace': found 1 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
    /host/spi-builder-workspace/Sources/snacker/Resources/Media.xcassets
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
[2/8] Compiling Snacker SnackbarController.swift
/host/spi-builder-workspace/Sources/snacker/Classes/Core/Snacker/Snacker.swift:6:8: error: no such module 'UIKit'
  4 | //
  5 |
  6 | import UIKit
    |        `- error: no such module 'UIKit'
  7 |
  8 | // MARK: - ISnacker
[3/8] Compiling Snacker SnackbarAlignment.swift
/host/spi-builder-workspace/Sources/snacker/Classes/Core/Snacker/Snacker.swift:6:8: error: no such module 'UIKit'
  4 | //
  5 |
  6 | import UIKit
    |        `- error: no such module 'UIKit'
  7 |
  8 | // MARK: - ISnacker
[4/8] Compiling Snacker SnackbarInsets.swift
/host/spi-builder-workspace/Sources/snacker/Classes/Core/Snacker/Snacker.swift:6:8: error: no such module 'UIKit'
  4 | //
  5 |
  6 | import UIKit
    |        `- error: no such module 'UIKit'
  7 |
  8 | // MARK: - ISnacker
[5/8] Compiling Snacker SnackbarAction.swift
/host/spi-builder-workspace/Sources/snacker/Classes/Core/Snacker/Snacker.swift:6:8: error: no such module 'UIKit'
  4 | //
  5 |
  6 | import UIKit
    |        `- error: no such module 'UIKit'
  7 |
  8 | // MARK: - ISnacker
[6/8] Compiling Snacker Snacker.swift
/host/spi-builder-workspace/Sources/snacker/Classes/Core/Snacker/Snacker.swift:6:8: error: no such module 'UIKit'
  4 | //
  5 |
  6 | import UIKit
    |        `- error: no such module 'UIKit'
  7 |
  8 | // MARK: - ISnacker
[7/8] Compiling Snacker SnackbarData.swift
/host/spi-builder-workspace/Sources/snacker/Classes/Core/Snacker/Snacker.swift:6:8: error: no such module 'UIKit'
  4 | //
  5 |
  6 | import UIKit
    |        `- error: no such module 'UIKit'
  7 |
  8 | // MARK: - ISnacker
error: emit-module command failed with exit code 1 (use -v to see invocation)
[8/8] Emitting module Snacker
/host/spi-builder-workspace/Sources/snacker/Classes/Core/Snacker/Snacker.swift:6:8: error: no such module 'UIKit'
  4 | //
  5 |
  6 | import UIKit
    |        `- error: no such module 'UIKit'
  7 |
  8 | // MARK: - ISnacker
BUILD FAILURE 6.1 linux