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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 icu-swift, reference master (e66774), with Swift 6.1 for tvOS using Xcode 16.3 on 25 Apr 2025 16:39:54 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/allevato/icu-swift.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/allevato/icu-swift
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at e66774c Update changelog for 0.2.0
Cloned https://github.com/allevato/icu-swift.git
Revision (git rev-parse @):
e66774c1f0d10f12d3961c7a8a9f2f52ba58781a
SUCCESS checkout https://github.com/allevato/icu-swift.git at master
========================================
Build
========================================
Selected platform:         tvOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/allevato/icu-swift.git
https://github.com/allevato/icu-swift.git
{
  "dependencies" : [
    {
      "identity" : "icu4c-swift",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.1",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/allevato/icu4c-swift"
    }
  ],
  "manifest_display_name" : "icu-swift",
  "name" : "icu-swift",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "swiftICU",
      "targets" : [
        "ICU"
      ],
      "type" : {
        "library" : [
          "static"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ICUTests",
      "module_type" : "SwiftTarget",
      "name" : "ICUTests",
      "path" : "Tests/ICUTests",
      "sources" : [
        "CharacterBreakCursorTests.swift",
        "LineBreakCursorTests.swift",
        "RuleBasedBreakCursorTests.swift",
        "SearchCursorTests.swift",
        "SentenceBreakCursorTests.swift",
        "TestSupport.swift",
        "WordBreakCursorTests.swift"
      ],
      "target_dependencies" : [
        "ICU"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ICU",
      "module_type" : "SwiftTarget",
      "name" : "ICU",
      "path" : "Sources/ICU",
      "product_memberships" : [
        "swiftICU"
      ],
      "sources" : [
        "BidiClass.swift",
        "BidiPairedBracketType.swift",
        "Block.swift",
        "BreakCursorImpl.swift",
        "BreakRuleParseError.swift",
        "CInterop.swift",
        "CharacterBreakCursor.swift",
        "ConvertibleFromUnicodeIntProperty.swift",
        "DecompositionType.swift",
        "EastAsianWidth.swift",
        "GeneralCategory.swift",
        "GraphemeClusterBreakType.swift",
        "HangulSyllableType.swift",
        "JoiningGroup.swift",
        "JoiningType.swift",
        "LineBreakCursor.swift",
        "LineBreakType.swift",
        "NormalizationCheckResult.swift",
        "NumericType.swift",
        "ParseErrorContext.swift",
        "RuleBasedBreakCursor.swift",
        "ScriptCode.swift",
        "SearchCursor.swift",
        "SentenceBreakCursor.swift",
        "SentenceBreakType.swift",
        "String+UTF16.swift",
        "UErrorCode+Additions.swift",
        "UnicodeNameKind.swift",
        "UnicodeScalar+BooleanProperties.swift",
        "UnicodeScalar+Casing.swift",
        "UnicodeScalar+Enumeration.swift",
        "UnicodeScalar+Internal.swift",
        "UnicodeScalar+Miscellaneous.swift",
        "UnicodeScalar+Naming.swift",
        "UnicodeScalar+Numeric.swift",
        "UnicodeVersion.swift",
        "UnsafeMutableBufferPointer+Deallocate.swift",
        "WordBreakCursor.swift",
        "WordBreakType.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Fetching from https://github.com/allevato/icu4c-swift
the Swift tools version specification's label 'Copyright' is misspelt; consider replacing it with 'swift-tools-version:'Resolve Package Graph
Updating from https://github.com/allevato/icu4c-swift
the Swift tools version specification's label 'Copyright' is misspelt; consider replacing it with 'swift-tools-version:'
Resolved source packages:
  spi-builder-workspace: (null)
2025-04-25 09:39:53.085 xcodebuild[517:2883] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2025-25-04_09-39-0053.xcresult
xcodebuild: error: Could not resolve package dependencies:
  the Swift tools version specification's label 'Copyright' is misspelt; consider replacing it with 'swift-tools-version:'
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Updating from https://github.com/allevato/icu4c-swift
the Swift tools version specification's label 'Copyright' is misspelt; consider replacing it with 'swift-tools-version:'
Resolved source packages:
  spi-builder-workspace: (null)
2025-04-25 09:39:54.230 xcodebuild[619:3417] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2025-25-04_09-39-0054.xcresult
xcodebuild: error: Could not resolve package dependencies:
  the Swift tools version specification's label 'Copyright' is misspelt; consider replacing it with 'swift-tools-version:'
BUILD FAILURE 6.1 tvOS