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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 SwiftLCS, reference 1.3.5 (51f609), with Swift 6.1 for iOS using Xcode 16.3 on 24 Apr 2025 21:43:49 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/Frugghi/SwiftLCS.git
Reference: 1.3.5
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/Frugghi/SwiftLCS
 * tag               1.3.5      -> FETCH_HEAD
HEAD is now at 51f609f Update podspec version
Cloned https://github.com/Frugghi/SwiftLCS.git
Revision (git rev-parse @):
51f609f127e41a0d2f231d410d817d439ae1c1f1
SUCCESS checkout https://github.com/Frugghi/SwiftLCS.git at 1.3.5
========================================
Build
========================================
Selected platform:         iOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/Frugghi/SwiftLCS.git
https://github.com/Frugghi/SwiftLCS.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "SwiftLCS",
  "name" : "SwiftLCS",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SwiftLCS",
      "targets" : [
        "SwiftLCS"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "4.2",
    "5"
  ],
  "targets" : [
    {
      "c99name" : "SwiftLCS_Tests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftLCS Tests",
      "path" : "Tests/SwiftLCS Tests",
      "sources" : [
        "ArrayTests.swift",
        "BenchmarkTests.swift",
        "IndexTests.swift",
        "LinkedListTests.swift",
        "StringTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "SwiftLCS"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SwiftLCS",
      "module_type" : "SwiftTarget",
      "name" : "SwiftLCS",
      "path" : "Source/SwiftLCS",
      "product_memberships" : [
        "SwiftLCS"
      ],
      "sources" : [
        "SwiftLCS.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
2025-04-24 14:43:48.981 xcodebuild[510:2813] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2025-24-04_14-43-0048.xcresult
xcodebuild: error: The directory /Users/admin/builder/spi-builder-workspace contains 2 projects, including multiple projects with the current extension (.xcodeproj). Specify the project to use with the -project option.
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
2025-04-24 14:43:49.633 xcodebuild[515:2866] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2025-24-04_14-43-0049.xcresult
xcodebuild: error: The directory /Users/admin/builder/spi-builder-workspace contains 2 projects, including multiple projects with the current extension (.xcodeproj). Specify the project to use with the -project option.
BUILD FAILURE 6.1 iOS