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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

Successful build of swift-weak-self-check, reference main (8644fa), with Swift 6.0 for macOS (SPM) on 24 Apr 2025 15:57:56 UTC.

Swift 6 data race errors: 0

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/p-x9/swift-weak-self-check.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/p-x9/swift-weak-self-check
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 8644faa Merge pull request #19 from p-x9/feature/setup-ci
Cloned https://github.com/p-x9/swift-weak-self-check.git
Revision (git rev-parse @):
8644faa05592288e54ac5a16bd4471929242d96c
SUCCESS checkout https://github.com/p-x9/swift-weak-self-check.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/p-x9/swift-weak-self-check.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun swift build --arch arm64
[1/1] Compiling plugin GenerateManual
[2/2] Compiling plugin WeakSelfCheckBuildToolPlugin
[3/3] Compiling plugin WeakSelfCheckCommandPlugin
Building for debugging...
[3/32] Write sources
[7/32] Write weak-self-check-entitlement.plist
[8/32] Write sources
[20/32] Compiling _SwiftSyntaxCShims dummy.c
[20/32] Compiling _CIndexStore dummy.c
[22/32] Write swift-version-5BDAB9E9C0126B9D.txt
[23/40] Compiling parser.c
[24/40] Compiling emitter.c
[25/40] Compiling scanner.c
[26/40] Compiling writer.c
[27/52] Compiling api.c
[28/52] Compiling reader.c
[30/52] Emitting module SwiftSyntax509
[31/52] Compiling SwiftSyntax509 Empty.swift
[32/52] Emitting module SwiftSyntax600
[33/52] Compiling SwiftSyntax600 Empty.swift
[34/52] Emitting module SwiftSyntax601
[35/52] Compiling SwiftSyntax601 Empty.swift
[36/52] Compiling SwiftSyntax510 Empty.swift
[37/52] Emitting module SwiftSyntax510
[38/137] Compiling ArgumentParserToolInfo ToolInfo.swift
[39/137] Emitting module ArgumentParserToolInfo
[40/176] Compiling SwiftSyntax SyntaxArenaAllocatedBuffer.swift
[41/176] Compiling SwiftSyntax SyntaxChildren.swift
[42/176] Compiling SwiftSyntax SyntaxCollection.swift
[43/176] Compiling SwiftSyntax SyntaxHashable.swift
[44/176] Compiling SwiftSyntax SyntaxIdentifier.swift
[45/176] Compiling SwiftSyntax SyntaxNodeFactory.swift
[46/176] Compiling SwiftSyntax SyntaxNodeStructure.swift
[47/183] Compiling ArgumentParser ExpressibleByArgument.swift
[48/183] Compiling ArgumentParser ParserError.swift
[49/185] Compiling ArgumentParser ArgumentDefinition.swift
[50/185] Compiling ArgumentParser ArgumentSet.swift
[51/185] Compiling ArgumentParser CommandParser.swift
[52/185] Compiling ArgumentParser InputKey.swift
[53/185] Compiling ArgumentParser BashCompletionsGenerator.swift
[54/185] Compiling ArgumentParser CompletionsGenerator.swift
[55/185] Compiling ArgumentParser FishCompletionsGenerator.swift
[56/185] Compiling ArgumentParser CommandConfiguration.swift
[57/185] Compiling ArgumentParser CommandGroup.swift
[58/185] Compiling ArgumentParser EnumerableFlag.swift
[60/189] Emitting module ArgumentParser
[61/189] Compiling ArgumentParser NameSpecification.swift
[62/189] Compiling ArgumentParser Option.swift
[63/189] Compiling ArgumentParser OptionGroup.swift
[64/189] Compiling ArgumentParser AsyncParsableCommand.swift
[68/189] Compiling ArgumentParser ZshCompletionsGenerator.swift
[69/189] Compiling ArgumentParser Argument.swift
[70/189] Compiling ArgumentParser Platform.swift
[71/189] Compiling ArgumentParser SequenceExtensions.swift
[72/189] Compiling ArgumentParser StringExtensions.swift
[73/189] Compiling ArgumentParser Tree.swift
[74/189] Compiling ArgumentParser ArgumentHelp.swift
[75/189] Compiling ArgumentParser ArgumentVisibility.swift
[76/189] Compiling ArgumentParser CompletionKind.swift
[77/189] Compiling ArgumentParser Errors.swift
[78/189] Compiling ArgumentParser Flag.swift
[89/189] Compiling Yams YamlError.swift
[90/189] Compiling Yams YamlTagProviding.swift
[91/189] Emitting module SwiftIndexStore
[92/189] Compiling SwiftIndexStore IndexStoreError.swift
[103/190] Emitting module Yams
[104/190] Compiling SwiftIndexStore OptionSetDisplayable.swift
[105/190] Compiling SwiftIndexStore IndexStoreSymbol.swift
[106/190] Compiling SwiftIndexStore IndexStoreRelation.swift
[107/190] Compiling SwiftIndexStore IndexStoreUnit.swift
[108/190] Compiling SwiftIndexStore IndexStoreOccurrence.swift
[109/190] Compiling SwiftIndexStore Process+Extension.swift
[110/190] Compiling SwiftIndexStore SwiftIndexStore.swift
[111/190] Compiling SwiftIndexStore LibIndexStore.swift
[112/190] Compiling SwiftIndexStore UnfairLock.swift
[113/190] Compiling ArgumentParser InputOrigin.swift
[114/190] Compiling ArgumentParser Name.swift
[115/190] Compiling ArgumentParser Parsed.swift
[116/190] Compiling ArgumentParser ParsedValues.swift
[117/190] Compiling ArgumentParser ParsableArguments.swift
[118/190] Compiling ArgumentParser ParsableArgumentsValidation.swift
[119/190] Compiling ArgumentParser ParsableCommand.swift
[120/190] Compiling ArgumentParser ArgumentDecoder.swift
[121/190] Compiling ArgumentParser HelpGenerator.swift
[122/190] Compiling ArgumentParser MessageInfo.swift
[123/190] Compiling ArgumentParser UsageGenerator.swift
[124/190] Compiling ArgumentParser CollectionExtensions.swift
[128/190] Compiling ArgumentParser HelpCommand.swift
[129/190] Compiling SwiftSyntax SourceEdit.swift
[130/190] Compiling SwiftSyntax SourceLength.swift
[131/190] Compiling SwiftSyntax SourceLocation.swift
[132/190] Compiling SwiftSyntax SourcePresence.swift
[133/190] Compiling SwiftSyntax SwiftSyntaxCompatibility.swift
[134/190] Compiling SwiftSyntax Syntax.swift
[135/190] Compiling SwiftSyntax SyntaxArena.swift
[136/190] Compiling SwiftSyntax Tokens.swift
[137/190] Compiling SwiftSyntax TriviaPieces.swift
[138/190] Compiling SwiftSyntax RawSyntaxNodesAB.swift
[139/190] Compiling SwiftSyntax RawSyntaxNodesC.swift
[140/190] Compiling SwiftSyntax RawSyntaxNodesD.swift
[141/190] Compiling SwiftSyntax RawSyntaxNodesEF.swift
[142/190] Compiling SwiftSyntax RawSyntaxNodesGHI.swift
[151/190] Emitting module SwiftSyntax
[157/190] Compiling SwiftSyntax SyntaxNodesAB.swift
[158/190] Compiling SwiftSyntax SyntaxNodesC.swift
[181/190] Compiling SwiftSyntax SyntaxNodesD.swift
[182/190] Compiling SwiftSyntax SyntaxNodesEF.swift
[183/190] Compiling SwiftSyntax SyntaxNodesGHI.swift
[184/190] Compiling SwiftSyntax SyntaxNodesJKLMN.swift
[185/190] Compiling SwiftSyntax SyntaxNodesOP.swift
[186/190] Compiling SwiftSyntax SyntaxNodesQRS.swift
[187/190] Compiling SwiftSyntax SyntaxNodesTUVWXYZ.swift
[188/249] Compiling SwiftDiagnostics Message.swift
[189/250] Compiling SwiftBasicFormat SyntaxProtocol+Formatted.swift
[190/250] Compiling SwiftBasicFormat Trivia+FormatExtensions.swift
[191/250] Compiling SwiftBasicFormat Syntax+Extensions.swift
[192/250] Compiling SwiftDiagnostics Note.swift
[193/250] Compiling SwiftDiagnostics FixIt.swift
[194/250] Compiling SwiftDiagnostics GroupedDiagnostics.swift
[195/250] Compiling SwiftDiagnostics DiagnosticDecorator.swift
[196/250] Compiling SwiftDiagnostics ANSIDiagnosticDecorator.swift
[197/250] Compiling SwiftDiagnostics BasicDiagnosticDecorator.swift
[198/250] Compiling SwiftDiagnostics Diagnostic.swift
[199/250] Compiling SwiftDiagnostics Convenience.swift
[200/250] Emitting module SwiftDiagnostics
[201/250] Compiling SwiftDiagnostics DiagnosticsFormatter.swift
[202/250] Compiling SwiftBasicFormat Indenter.swift
[203/250] Compiling SwiftBasicFormat InferIndentation.swift
[204/250] Compiling SwiftBasicFormat BasicFormat.swift
[205/250] Emitting module SwiftBasicFormat
[206/250] Compiling SwiftParser TopLevel.swift
[207/250] Compiling SwiftParser TriviaParser.swift
[208/250] Compiling SwiftParser Types.swift
[209/250] Compiling SwiftParser ExperimentalFeatures.swift
[210/254] Compiling SwiftParser TokenConsumer.swift
[211/254] Compiling SwiftParser TokenPrecedence.swift
[212/254] Compiling SwiftParser TokenSpec.swift
[213/254] Compiling SwiftParser TokenSpecSet.swift
[214/254] Compiling SwiftParser StringLiterals.swift
[215/254] Compiling SwiftParser SwiftParserCompatibility.swift
[216/254] Compiling SwiftParser SwiftVersion.swift
[217/254] Compiling SwiftParser SyntaxUtils.swift
[218/254] Compiling SwiftParser UnicodeScalarExtensions.swift
[219/254] Compiling SwiftParser Lookahead.swift
[220/254] Compiling SwiftParser LoopProgressCondition.swift
[221/254] Compiling SwiftParser Modifiers.swift
[222/254] Compiling SwiftParser Names.swift
[223/254] Compiling SwiftParser Recovery.swift
[224/254] Compiling SwiftParser Specifiers.swift
[225/254] Compiling SwiftParser Statements.swift
[226/254] Compiling SwiftParser StringLiteralRepresentedLiteralValue.swift
[227/254] Compiling SwiftParser Nominals.swift
[228/254] Compiling SwiftParser Parameters.swift
[229/254] Compiling SwiftParser ParseSourceFile.swift
[230/254] Compiling SwiftParser Parser.swift
[231/254] Compiling SwiftParser Patterns.swift
[232/254] Emitting module SwiftParser
[233/254] Compiling SwiftParser Attributes.swift
[234/254] Compiling SwiftParser Availability.swift
[235/254] Compiling SwiftParser CharacterInfo.swift
[236/254] Compiling SwiftParser CollectionNodes+Parsable.swift
[237/254] Compiling SwiftParser Declarations.swift
[238/254] Compiling SwiftParser Cursor.swift
[239/254] Compiling SwiftParser Lexeme.swift
[240/254] Compiling SwiftParser LexemeSequence.swift
[241/254] Compiling SwiftParser Lexer.swift
[242/254] Compiling SwiftParser RegexLiteralLexer.swift
[243/254] Compiling SwiftParser Directives.swift
[244/254] Compiling SwiftParser ExpressionInterpretedAsVersionTuple.swift
[245/254] Compiling SwiftParser Expressions.swift
[246/254] Compiling SwiftParser IncrementalParseTransition.swift
[247/254] Compiling SwiftParser IsValidIdentifier.swift
[248/254] Compiling SwiftParser IsLexerClassified.swift
[249/254] Compiling SwiftParser LayoutNodes+Parsable.swift
[250/254] Compiling SwiftParser Parser+TokenSpecSet.swift
[251/254] Compiling SwiftParser TokenSpecStaticMembers.swift
[252/267] Compiling SwiftParserDiagnostics PresenceUtils.swift
[253/268] Compiling SwiftParserDiagnostics TokenNameForDiagnostics.swift
[254/268] Compiling SwiftParserDiagnostics DiagnosticExtensions.swift
[255/268] Compiling SwiftParserDiagnostics LexerDiagnosticMessages.swift
[256/268] Compiling SwiftParserDiagnostics ChildNameForDiagnostics.swift
[257/268] Compiling SwiftParserDiagnostics SyntaxExtensions.swift
[258/268] Compiling SwiftParserDiagnostics Utils.swift
[259/268] Compiling SwiftParserDiagnostics SyntaxKindNameForDiagnostics.swift
[260/268] Compiling SwiftParserDiagnostics ParserDiagnosticMessages.swift
[261/268] Compiling SwiftParserDiagnostics MissingNodesError.swift
[262/268] Compiling SwiftParserDiagnostics MissingTokenError.swift
[263/268] Emitting module SwiftParserDiagnostics
[264/268] Compiling SwiftParserDiagnostics MultiLineStringLiteralDiagnosticsGenerator.swift
[265/268] Compiling SwiftParserDiagnostics ParseDiagnosticsGenerator.swift
[266/283] Compiling SwiftSyntaxBuilder SyntaxParsable+ExpressibleByStringInterpolation.swift
[267/283] Compiling SwiftSyntaxBuilder ValidatingSyntaxNodes.swift
[268/283] Compiling SwiftSyntaxBuilder BuildableNodes.swift
[269/284] Compiling SwiftSyntaxBuilder RenamedChildrenBuilderCompatibility.swift
[270/284] Compiling SwiftSyntaxBuilder ResultBuilders.swift
[271/284] Compiling SwiftSyntaxBuilder ResultBuilderExtensions.swift
[272/284] Compiling SwiftSyntaxBuilder SwiftSyntaxBuilderCompatibility.swift
[273/284] Compiling SwiftSyntaxBuilder Syntax+StringInterpolation.swift
[274/284] Compiling SwiftSyntaxBuilder SyntaxNodeWithBody.swift
[275/284] Compiling SwiftSyntaxBuilder Indenter.swift
[276/284] Compiling SwiftSyntaxBuilder ListBuilder.swift
[277/284] Compiling SwiftSyntaxBuilder WithTrailingCommaSyntax+EnsuringTrailingComma.swift
[278/284] Compiling SwiftSyntaxBuilder SyntaxExpressibleByStringInterpolationConformances.swift
[279/284] Emitting module SwiftSyntaxBuilder
[280/284] Compiling SwiftSyntaxBuilder ConvenienceInitializers.swift
[281/284] Compiling SwiftSyntaxBuilder DeclSyntaxParseable.swift
[282/301] Compiling WeakSelfCheckCore ReporterProtocol.swift
[283/301] Compiling WeakSelfCheckCore XcodeReporter.swift
[284/302] Compiling WeakSelfCheckCore WhiteListElement.swift
[285/302] Compiling WeakSelfCheckCore CallbackReporter.swift
[286/302] Compiling WeakSelfCheckCore Report.swift
[287/302] Compiling WeakSelfCheckCore ReportType.swift
[288/302] Compiling WeakSelfCheckCore MemberAccessExprSyntax+.swift
[289/302] Compiling WeakSelfCheckCore String+.swift
[290/302] Compiling WeakSelfCheckCore demangle.swift
[291/302] Compiling WeakSelfCheckCore Syntax+.swift
[292/302] Compiling WeakSelfCheckCore TypeSyntaxProtocol+.swift
[293/302] Compiling WeakSelfCheckCore SelfAccessDetector.swift
[294/302] Compiling WeakSelfCheckCore ClosureWeakSelfChecker.swift
[295/302] Compiling WeakSelfCheckCore ClosureCapture+.swift
[296/302] Emitting module WeakSelfCheckCore
[297/302] Compiling WeakSelfCheckCore FunctionParameterSyntax+.swift
[298/302] Compiling WeakSelfCheckCore IndexStoreSymbol+.swift
[299/302] Compiling WeakSelfCheckCore WeakSelfChecker.swift
[300/307] Compiling weak_self_check ReportType+.swift
[301/307] Compiling weak_self_check Config.swift
[302/307] Emitting module weak_self_check
[303/307] Compiling weak_self_check main.swift
[304/307] Compiling weak_self_check FileManager+.swift
[304/307] Write Objects.LinkFileList
[305/307] Linking weak-self-check
[306/307] Applying weak-self-check
Build complete! (37.93s)
Fetching https://github.com/swiftlang/swift-syntax.git
Fetching https://github.com/kateinoigakukun/swift-indexstore.git
Fetching https://github.com/jpsim/Yams.git
Fetching https://github.com/apple/swift-argument-parser.git
[1/10289] Fetching yams
[2/25202] Fetching yams, swift-argument-parser
[22220/95387] Fetching yams, swift-argument-parser, swift-syntax
[39942/95706] Fetching yams, swift-argument-parser, swift-syntax, swift-indexstore
Fetched https://github.com/jpsim/Yams.git from cache (1.85s)
Fetched https://github.com/kateinoigakukun/swift-indexstore.git from cache (1.85s)
[44391/85098] Fetching swift-argument-parser, swift-syntax
Fetched https://github.com/swiftlang/swift-syntax.git from cache (2.94s)
Fetched https://github.com/apple/swift-argument-parser.git from cache (2.94s)
Computing version for https://github.com/kateinoigakukun/swift-indexstore.git
Computed https://github.com/kateinoigakukun/swift-indexstore.git at 0.3.0 (0.45s)
Computing version for https://github.com/apple/swift-argument-parser.git
Computed https://github.com/apple/swift-argument-parser.git at 1.5.0 (0.50s)
Computing version for https://github.com/jpsim/Yams.git
Computed https://github.com/jpsim/Yams.git at 5.3.1 (3.63s)
Computing version for https://github.com/swiftlang/swift-syntax.git
Computed https://github.com/swiftlang/swift-syntax.git at 601.0.1 (0.69s)
Creating working copy for https://github.com/kateinoigakukun/swift-indexstore.git
Working copy of https://github.com/kateinoigakukun/swift-indexstore.git resolved at 0.3.0
Creating working copy for https://github.com/jpsim/Yams.git
Working copy of https://github.com/jpsim/Yams.git resolved at 5.3.1
Creating working copy for https://github.com/apple/swift-argument-parser.git
Working copy of https://github.com/apple/swift-argument-parser.git resolved at 1.5.0
Creating working copy for https://github.com/swiftlang/swift-syntax.git
Working copy of https://github.com/swiftlang/swift-syntax.git resolved at 601.0.1
Build complete.
{
  "dependencies" : [
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.2.0",
            "upper_bound" : "2.0.0"
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  "manifest_display_name" : "swift-weak-self-check",
  "name" : "swift-weak-self-check",
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  "platforms" : [
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  "products" : [
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      "name" : "WeakSelfCheckBuildToolPlugin",
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    {
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      "targets" : [
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  ],
  "targets" : [
    {
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      "module_type" : "SwiftTarget",
      "name" : "weak-self-check",
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      "product_dependencies" : [
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        "Yams",
        "SwiftIndexStore"
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      "product_memberships" : [
        "weak-self-check",
        "WeakSelfCheckBuildToolPlugin",
        "WeakSelfCheckCommandPlugin"
      ],
      "sources" : [
        "Config.swift",
        "Extension/FileManager+.swift",
        "Extension/ReportType+.swift",
        "main.swift"
      ],
      "target_dependencies" : [
        "WeakSelfCheckCore"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "WeakSelfCheckCoreTests",
      "module_type" : "SwiftTarget",
      "name" : "WeakSelfCheckCoreTests",
      "path" : "Tests/WeakSelfCheckCoreTests",
      "product_dependencies" : [
        "SwiftSyntax",
        "SwiftSyntaxBuilder"
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      "sources" : [
        "WeakSelfCheckCoreTests.swift"
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      "target_dependencies" : [
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      "type" : "test"
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      "product_memberships" : [
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      ],
      "sources" : [
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        "Extension/ClosureCapture+.swift",
        "Extension/FunctionParameterSyntax+.swift",
        "Extension/IndexStoreSymbol+.swift",
        "Extension/MemberAccessExprSyntax+.swift",
        "Extension/String+.swift",
        "Extension/Syntax+.swift",
        "Extension/TypeSyntaxProtocol+.swift",
        "Model/WhiteListElement.swift",
        "Reporter/CallbackReporter.swift",
        "Reporter/Model/Report.swift",
        "Reporter/Model/ReportType.swift",
        "Reporter/ReporterProtocol.swift",
        "Reporter/XcodeReporter.swift",
        "SelfAccessDetector.swift",
        "Util/demangle.swift",
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      ],
      "type" : "library"
    },
    {
      "c99name" : "WeakSelfCheckCommandPlugin",
      "module_type" : "PluginTarget",
      "name" : "WeakSelfCheckCommandPlugin",
      "path" : "Plugins/WeakSelfCheckCommandPlugin",
      "plugin_capability" : {
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  "tools_version" : "5.9"
}
Done.