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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 0.2.0 (e66774), with Swift 6.1 for Linux on 25 Apr 2025 16:35:00 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/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: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/allevato/icu-swift.git
Reference: 0.2.0
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/allevato/icu-swift
 * tag               0.2.0      -> FETCH_HEAD
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 0.2.0
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/allevato/icu-swift.git
https://github.com/allevato/icu-swift.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "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" : "/host/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"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/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 -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures 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/allevato/icu4c-swift
[1/19] Fetching icu4c-swift
Fetched https://github.com/allevato/icu4c-swift from cache (0.20s)
Computing version for https://github.com/allevato/icu4c-swift
error: the Swift tools version specification's label 'Copyright' is misspelt; consider replacing it with 'swift-tools-version:'
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/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
Updating https://github.com/allevato/icu4c-swift
Updated https://github.com/allevato/icu4c-swift (0.13s)
Computing version for https://github.com/allevato/icu4c-swift
error: the Swift tools version specification's label 'Copyright' is misspelt; consider replacing it with 'swift-tools-version:'
BUILD FAILURE 6.1 linux