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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 GCOverseer, reference v2.0.0 (dbaee2), with Swift 6.1 for Linux on 30 Apr 2025 01:43:29 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: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/backslash-f/gcoverseer.git
Reference: v2.0.0
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/backslash-f/gcoverseer
 * tag               v2.0.0     -> FETCH_HEAD
HEAD is now at dbaee21 Stream var renaming
Cloned https://github.com/backslash-f/gcoverseer.git
Revision (git rev-parse @):
dbaee214413ff507dd802ba8d3b45c08b0a4a96c
SUCCESS checkout https://github.com/backslash-f/gcoverseer.git at v2.0.0
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/backslash-f/gcoverseer.git
https://github.com/backslash-f/gcoverseer.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
    {
      "identity" : "applogger",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "2.0.0",
            "upper_bound" : "3.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/backslash-f/applogger"
    },
    {
      "identity" : "swift-testing",
      "requirement" : {
        "branch" : [
          "swift-6.0.2-RELEASE"
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-testing.git"
    }
  ],
  "manifest_display_name" : "GCOverseer",
  "name" : "GCOverseer",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "18.0"
    },
    {
      "name" : "macos",
      "version" : "15.0"
    },
    {
      "name" : "tvos",
      "version" : "18.0"
    }
  ],
  "products" : [
    {
      "name" : "GCOverseer",
      "targets" : [
        "GCOverseer"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5",
    "6"
  ],
  "targets" : [
    {
      "c99name" : "GCOverseerTests",
      "module_type" : "SwiftTarget",
      "name" : "GCOverseerTests",
      "path" : "Tests",
      "product_dependencies" : [
        "Testing"
      ],
      "sources" : [
        "Controllers.swift",
        "DefaultValues.swift",
        "Mocks/MockGCController.swift",
        "Mocks/MockGCMotion.swift",
        "Mocks/MockGCPhysicalInputProfile.swift"
      ],
      "target_dependencies" : [
        "GCOverseer"
      ],
      "type" : "test"
    },
    {
      "c99name" : "GCOverseer",
      "module_type" : "SwiftTarget",
      "name" : "GCOverseer",
      "path" : "Sources/GCOverseer",
      "product_dependencies" : [
        "AppLogger"
      ],
      "product_memberships" : [
        "GCOverseer"
      ],
      "sources" : [
        "GCOverseer+Interface.swift",
        "GCOverseer+Logging.swift",
        "GCOverseer.swift",
        "GCOverseerProtocol.swift",
        "GameControllerEvent.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
Fetching https://github.com/apple/swift-testing.git
[1/22225] Fetching swift-testing
Fetched https://github.com/apple/swift-testing.git from cache (0.91s)
Fetching https://github.com/swiftlang/swift-syntax.git
Fetching https://github.com/backslash-f/applogger
[1/110] Fetching applogger
Fetched https://github.com/backslash-f/applogger from cache (0.21s)
[1/70245] Fetching swift-syntax
Fetched https://github.com/swiftlang/swift-syntax.git from cache (3.74s)
Computing version for https://github.com/swiftlang/swift-syntax.git
Computed https://github.com/swiftlang/swift-syntax.git at 600.0.1 (5.85s)
Computing version for https://github.com/backslash-f/applogger
Computed https://github.com/backslash-f/applogger at 2.0.1 (0.42s)
Creating working copy for https://github.com/apple/swift-testing.git
Working copy of https://github.com/apple/swift-testing.git resolved at swift-6.0.2-RELEASE (cd448bb)
Creating working copy for https://github.com/backslash-f/applogger
Working copy of https://github.com/backslash-f/applogger resolved at 2.0.1
Creating working copy for https://github.com/swiftlang/swift-syntax.git
Working copy of https://github.com/swiftlang/swift-syntax.git resolved at 600.0.1
Building for debugging...
[0/3] Write sources
[2/3] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[4/5] Emitting module AppLogger
/host/spi-builder-workspace/.build/checkouts/applogger/Sources/AppLogger/AppLogger.swift:9:8: error: no such module 'os'
 7 |
 8 | import Foundation
 9 | import os
   |        `- error: no such module 'os'
10 |
11 | /// Logs app info by using the newest Swift unified logging APIs.
[5/5] Compiling AppLogger AppLogger.swift
/host/spi-builder-workspace/.build/checkouts/applogger/Sources/AppLogger/AppLogger.swift:9:8: error: no such module 'os'
 7 |
 8 | import Foundation
 9 | import os
   |        `- error: no such module 'os'
10 |
11 | /// Logs app info by using the newest Swift unified logging APIs.
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
[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)
[2/3] Emitting module AppLogger
/host/spi-builder-workspace/.build/checkouts/applogger/Sources/AppLogger/AppLogger.swift:9:8: error: no such module 'os'
 7 |
 8 | import Foundation
 9 | import os
   |        `- error: no such module 'os'
10 |
11 | /// Logs app info by using the newest Swift unified logging APIs.
[3/3] Compiling AppLogger AppLogger.swift
/host/spi-builder-workspace/.build/checkouts/applogger/Sources/AppLogger/AppLogger.swift:9:8: error: no such module 'os'
 7 |
 8 | import Foundation
 9 | import os
   |        `- error: no such module 'os'
10 |
11 | /// Logs app info by using the newest Swift unified logging APIs.
BUILD FAILURE 6.1 linux