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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 Background, reference main (fa91e3), with Swift 6.1 for Linux on 30 Apr 2025 23:52:06 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/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/ChimeHQ/Background.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/ChimeHQ/Background
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at fa91e36 Make sure to keep watchOS excluded
Cloned https://github.com/ChimeHQ/Background.git
Revision (git rev-parse @):
fa91e36048fa85748cbbb5af4c5de027ef6cb9e2
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/ChimeHQ/Background.git at main
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/ChimeHQ/Background.git
https://github.com/ChimeHQ/Background.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Background",
  "name" : "Background",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "11.0"
    },
    {
      "name" : "ios",
      "version" : "14.0"
    },
    {
      "name" : "tvos",
      "version" : "14.0"
    },
    {
      "name" : "watchos",
      "version" : "7.0"
    },
    {
      "name" : "maccatalyst",
      "version" : "14.0"
    }
  ],
  "products" : [
    {
      "name" : "Background",
      "targets" : [
        "Background"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "BackgroundTests",
      "module_type" : "SwiftTarget",
      "name" : "BackgroundTests",
      "path" : "Tests/BackgroundTests",
      "sources" : [
        "BackgroundTests.swift",
        "HTTPHeaderTests.swift",
        "NetworkResponseTests.swift"
      ],
      "target_dependencies" : [
        "Background"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Background",
      "module_type" : "SwiftTarget",
      "name" : "Background",
      "path" : "Sources/Background",
      "product_memberships" : [
        "Background"
      ],
      "sources" : [
        "BackgroundTaskConfiguration.swift",
        "Downloader.swift",
        "NetworkResponse.swift",
        "TaskScheduler.swift",
        "URLResponse+Utilities.swift",
        "URLSessionDelegateAdapter.swift",
        "Uploader.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$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
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)
[3/10] Emitting module Background
/host/spi-builder-workspace/Sources/Background/Downloader.swift:2:8: error: no such module 'OSLog'
  1 | import Foundation
  2 | import OSLog
    |        `- error: no such module 'OSLog'
  3 |
  4 | /// Manages background downloads
[4/10] Compiling Background BackgroundTaskConfiguration.swift
/host/spi-builder-workspace/Sources/Background/Downloader.swift:2:8: error: no such module 'OSLog'
  1 | import Foundation
  2 | import OSLog
    |        `- error: no such module 'OSLog'
  3 |
  4 | /// Manages background downloads
[5/10] Compiling Background Downloader.swift
/host/spi-builder-workspace/Sources/Background/Downloader.swift:2:8: error: no such module 'OSLog'
  1 | import Foundation
  2 | import OSLog
    |        `- error: no such module 'OSLog'
  3 |
  4 | /// Manages background downloads
[6/10] Compiling Background URLSessionDelegateAdapter.swift
/host/spi-builder-workspace/Sources/Background/Downloader.swift:2:8: error: no such module 'OSLog'
  1 | import Foundation
  2 | import OSLog
    |        `- error: no such module 'OSLog'
  3 |
  4 | /// Manages background downloads
[7/10] Compiling Background Uploader.swift
/host/spi-builder-workspace/Sources/Background/Downloader.swift:2:8: error: no such module 'OSLog'
  1 | import Foundation
  2 | import OSLog
    |        `- error: no such module 'OSLog'
  3 |
  4 | /// Manages background downloads
[8/10] Compiling Background TaskScheduler.swift
/host/spi-builder-workspace/Sources/Background/Downloader.swift:2:8: error: no such module 'OSLog'
  1 | import Foundation
  2 | import OSLog
    |        `- error: no such module 'OSLog'
  3 |
  4 | /// Manages background downloads
[9/10] Compiling Background URLResponse+Utilities.swift
/host/spi-builder-workspace/Sources/Background/Downloader.swift:2:8: error: no such module 'OSLog'
  1 | import Foundation
  2 | import OSLog
    |        `- error: no such module 'OSLog'
  3 |
  4 | /// Manages background downloads
[10/10] Compiling Background NetworkResponse.swift
/host/spi-builder-workspace/Sources/Background/Downloader.swift:2:8: error: no such module 'OSLog'
  1 | import Foundation
  2 | import OSLog
    |        `- error: no such module 'OSLog'
  3 |
  4 | /// Manages background downloads
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/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
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
[2/9] Compiling Background URLSessionDelegateAdapter.swift
/host/spi-builder-workspace/Sources/Background/Downloader.swift:2:8: error: no such module 'OSLog'
  1 | import Foundation
  2 | import OSLog
    |        `- error: no such module 'OSLog'
  3 |
  4 | /// Manages background downloads
[3/9] Compiling Background URLResponse+Utilities.swift
/host/spi-builder-workspace/Sources/Background/Downloader.swift:2:8: error: no such module 'OSLog'
  1 | import Foundation
  2 | import OSLog
    |        `- error: no such module 'OSLog'
  3 |
  4 | /// Manages background downloads
[4/9] Compiling Background Uploader.swift
/host/spi-builder-workspace/Sources/Background/Downloader.swift:2:8: error: no such module 'OSLog'
  1 | import Foundation
  2 | import OSLog
    |        `- error: no such module 'OSLog'
  3 |
  4 | /// Manages background downloads
[5/9] Compiling Background TaskScheduler.swift
/host/spi-builder-workspace/Sources/Background/Downloader.swift:2:8: error: no such module 'OSLog'
  1 | import Foundation
  2 | import OSLog
    |        `- error: no such module 'OSLog'
  3 |
  4 | /// Manages background downloads
[6/9] Compiling Background NetworkResponse.swift
/host/spi-builder-workspace/Sources/Background/Downloader.swift:2:8: error: no such module 'OSLog'
  1 | import Foundation
  2 | import OSLog
    |        `- error: no such module 'OSLog'
  3 |
  4 | /// Manages background downloads
error: emit-module command failed with exit code 1 (use -v to see invocation)
[7/9] Emitting module Background
/host/spi-builder-workspace/Sources/Background/Downloader.swift:2:8: error: no such module 'OSLog'
  1 | import Foundation
  2 | import OSLog
    |        `- error: no such module 'OSLog'
  3 |
  4 | /// Manages background downloads
[8/9] Compiling Background Downloader.swift
/host/spi-builder-workspace/Sources/Background/Downloader.swift:2:8: error: no such module 'OSLog'
  1 | import Foundation
  2 | import OSLog
    |        `- error: no such module 'OSLog'
  3 |
  4 | /// Manages background downloads
[9/9] Compiling Background BackgroundTaskConfiguration.swift
/host/spi-builder-workspace/Sources/Background/Downloader.swift:2:8: error: no such module 'OSLog'
  1 | import Foundation
  2 | import OSLog
    |        `- error: no such module 'OSLog'
  3 |
  4 | /// Manages background downloads
BUILD FAILURE 6.1 linux