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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 ContainerController, reference master (f044ce), with Swift 6.1 for iOS using Xcode 16.3 on 29 Apr 2025 01:11:20 UTC.

Build Command

No build command. This typically means the build failed at an early stage where we determine the build command.

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/mrustaa/ContainerController.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/mrustaa/ContainerController
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at f044cef Update README.md
Cloned https://github.com/mrustaa/ContainerController.git
Revision (git rev-parse @):
f044cef62c3972108bcfa9fac2d3eedf461a70e0
SUCCESS checkout https://github.com/mrustaa/ContainerController.git at master
========================================
Build
========================================
Selected platform:         iOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/mrustaa/ContainerController.git
https://github.com/mrustaa/ContainerController.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "ContainerController",
  "name" : "ContainerController",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "ContainerController",
      "targets" : [
        "ContainerController"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ContainerControllerTests",
      "module_type" : "SwiftTarget",
      "name" : "ContainerControllerTests",
      "path" : "Tests/ContainerControllerTests",
      "sources" : [
        "ContainerControllerTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "ContainerController"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ContainerController",
      "module_type" : "SwiftTarget",
      "name" : "ContainerController",
      "path" : "Sources/ContainerController",
      "product_memberships" : [
        "ContainerController"
      ],
      "sources" : [
        "ContainerCollection/CollectionAdapterCell.swift",
        "ContainerCollection/CollectionAdapterCellData.swift",
        "ContainerCollection/CollectionAdapterItem.swift",
        "ContainerCollection/CollectionAdapterTypes.swift",
        "ContainerCollection/CollectionAdapterView.swift",
        "ContainerController.swift",
        "ContainerControllerDelegate.swift",
        "ContainerDevice.swift",
        "ContainerLayout.swift",
        "ContainerTable/TableAdapterCell.swift",
        "ContainerTable/TableAdapterCellData.swift",
        "ContainerTable/TableAdapterItem.swift",
        "ContainerTable/TableAdapterTypes.swift",
        "ContainerTable/TableAdapterView.swift",
        "ContainerTypes.swift",
        "ContainerView.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
2025-04-28 18:11:20.273 xcodebuild[521:2937] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2025-28-04_18-11-0020.xcresult
xcodebuild: error: 'ContainerControllerSwift.xcworkspace' is not a workspace file.
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
2025-04-28 18:11:20.919 xcodebuild[526:2995] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2025-28-04_18-11-0020.xcresult
xcodebuild: error: 'ContainerControllerSwift.xcworkspace' is not a workspace file.
BUILD FAILURE 6.1 iOS