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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 MathParser, reference 3.1.0 (0a1591), with Swift 6.1 for macOS (Xcode) using Xcode 16.3 on 24 Apr 2025 15:09:54 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Demo -destination platform=macOS,arch=arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/davedelong/DDMathParser.git
Reference: 3.1.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/davedelong/DDMathParser
 * tag               3.1.0      -> FETCH_HEAD
HEAD is now at 0a15910 Merge pull request #169 from kiliankoe/swiftpm-package-layout
Cloned https://github.com/davedelong/DDMathParser.git
Revision (git rev-parse @):
0a159109e2393c3e1db4e2b638009c82e6650b4d
SUCCESS checkout https://github.com/davedelong/DDMathParser.git at 3.1.0
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.1
Building package at path:  $PWD
https://github.com/davedelong/DDMathParser.git
https://github.com/davedelong/DDMathParser.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "MathParser",
  "name" : "MathParser",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "MathParser",
      "targets" : [
        "MathParser"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MathParserTests",
      "module_type" : "SwiftTarget",
      "name" : "MathParserTests",
      "path" : "MathParser/Tests/MathParserTests",
      "sources" : [
        "EvaluatorTests.swift",
        "ExpressionTests.swift",
        "GithubIssues.swift",
        "GroupingTests.swift",
        "ResolverTests.swift",
        "RewriterTests.swift",
        "TestHelpers.swift",
        "TokenizerTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "MathParser"
      ],
      "type" : "test"
    },
    {
      "c99name" : "MathParser",
      "module_type" : "SwiftTarget",
      "name" : "MathParser",
      "path" : "MathParser/Sources/MathParser",
      "product_memberships" : [
        "MathParser"
      ],
      "sources" : [
        "Character.swift",
        "Configuration.swift",
        "DecimalNumberExtractor.swift",
        "Deprecations.swift",
        "Double.swift",
        "DynamicResolution.swift",
        "Either.swift",
        "Evaluator.swift",
        "ExponentExtractor.swift",
        "Expression+Matching.swift",
        "Expression.swift",
        "ExpressionRewriter.swift",
        "Expressionizer.swift",
        "FractionNumberExtractor.swift",
        "Function.swift",
        "FunctionSet.swift",
        "Functions+Defaults.swift",
        "GroupedToken.swift",
        "HexNumberExtractor.swift",
        "IdentifierExtractor.swift",
        "LocalizedNumberExtractor.swift",
        "MathParserErrors.swift",
        "OctalNumberExtractor.swift",
        "Operator+Defaults.swift",
        "Operator.swift",
        "OperatorExtractor.swift",
        "OperatorSet.swift",
        "OperatorTokenSet.swift",
        "PeekingIterator.swift",
        "QuotedVariableExtractor.swift",
        "RawToken.swift",
        "ResolvedToken.swift",
        "RewriteRule+Defaults.swift",
        "RewriteRule.swift",
        "String.swift",
        "SubstitutionExtensions.swift",
        "TokenCharacterBuffer.swift",
        "TokenExtractor.swift",
        "TokenGrouper.swift",
        "TokenResolver.swift",
        "Tokenizer.swift",
        "VariableExtractor.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
resolved source packages:
{
  "dependencies" : [
  ],
  "manifest_display_name" : "MathParser",
  "name" : "MathParser",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "MathParser",
      "targets" : [
        "MathParser"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MathParserTests",
      "module_type" : "SwiftTarget",
      "name" : "MathParserTests",
      "path" : "MathParser/Tests/MathParserTests",
      "sources" : [
        "EvaluatorTests.swift",
        "ExpressionTests.swift",
        "GithubIssues.swift",
        "GroupingTests.swift",
        "ResolverTests.swift",
        "RewriterTests.swift",
        "TestHelpers.swift",
        "TokenizerTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "MathParser"
      ],
      "type" : "test"
    },
    {
      "c99name" : "MathParser",
      "module_type" : "SwiftTarget",
      "name" : "MathParser",
      "path" : "MathParser/Sources/MathParser",
      "product_memberships" : [
        "MathParser"
      ],
      "sources" : [
        "Character.swift",
        "Configuration.swift",
        "DecimalNumberExtractor.swift",
        "Deprecations.swift",
        "Double.swift",
        "DynamicResolution.swift",
        "Either.swift",
        "Evaluator.swift",
        "ExponentExtractor.swift",
        "Expression+Matching.swift",
        "Expression.swift",
        "ExpressionRewriter.swift",
        "Expressionizer.swift",
        "FractionNumberExtractor.swift",
        "Function.swift",
        "FunctionSet.swift",
        "Functions+Defaults.swift",
        "GroupedToken.swift",
        "HexNumberExtractor.swift",
        "IdentifierExtractor.swift",
        "LocalizedNumberExtractor.swift",
        "MathParserErrors.swift",
        "OctalNumberExtractor.swift",
        "Operator+Defaults.swift",
        "Operator.swift",
        "OperatorExtractor.swift",
        "OperatorSet.swift",
        "OperatorTokenSet.swift",
        "PeekingIterator.swift",
        "QuotedVariableExtractor.swift",
        "RawToken.swift",
        "ResolvedToken.swift",
        "RewriteRule+Defaults.swift",
        "RewriteRule.swift",
        "String.swift",
        "SubstitutionExtensions.swift",
        "TokenCharacterBuffer.swift",
        "TokenExtractor.swift",
        "TokenGrouper.swift",
        "TokenResolver.swift",
        "Tokenizer.swift",
        "VariableExtractor.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "Demo",
    "schemes" : [
      "Demo"
    ],
    "targets" : [
      "Demo"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Demo -destination platform=macOS,arch=arm64 OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath /Users/admin/builder/spi-builder-workspace/.derivedData build -scheme Demo -destination platform=macOS,arch=arm64 "OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures"
Build settings from command line:
    OTHER_SWIFT_FLAGS = -stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (1 target)
    Target 'Demo' in project 'Demo' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/ibtool --version --output-format xml1
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -arch arm64 -isysroot /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/actool --version --output-format xml1
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: 335a1bdfe62eaeafe3df3c3a015b5518
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/335a1bdfe62eaeafe3df3c3a015b5518.xcbuilddata
/Users/admin/builder/spi-builder-workspace/Demo.xcodeproj: error: No signing certificate "Mac Development" found: No "Mac Development" signing certificate matching team ID "654LUM7646" with a private key was found. (in target 'Demo' from project 'Demo')
/Users/admin/builder/spi-builder-workspace/Demo.xcodeproj: error: Missing package product 'MathParser' (in target 'Demo' from project 'Demo')
** BUILD FAILED **
The following build commands failed:
	Building project Demo with scheme Demo
(1 failure)
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
resolved source packages:
{
  "dependencies" : [
  ],
  "manifest_display_name" : "MathParser",
  "name" : "MathParser",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "MathParser",
      "targets" : [
        "MathParser"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MathParserTests",
      "module_type" : "SwiftTarget",
      "name" : "MathParserTests",
      "path" : "MathParser/Tests/MathParserTests",
      "sources" : [
        "EvaluatorTests.swift",
        "ExpressionTests.swift",
        "GithubIssues.swift",
        "GroupingTests.swift",
        "ResolverTests.swift",
        "RewriterTests.swift",
        "TestHelpers.swift",
        "TokenizerTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "MathParser"
      ],
      "type" : "test"
    },
    {
      "c99name" : "MathParser",
      "module_type" : "SwiftTarget",
      "name" : "MathParser",
      "path" : "MathParser/Sources/MathParser",
      "product_memberships" : [
        "MathParser"
      ],
      "sources" : [
        "Character.swift",
        "Configuration.swift",
        "DecimalNumberExtractor.swift",
        "Deprecations.swift",
        "Double.swift",
        "DynamicResolution.swift",
        "Either.swift",
        "Evaluator.swift",
        "ExponentExtractor.swift",
        "Expression+Matching.swift",
        "Expression.swift",
        "ExpressionRewriter.swift",
        "Expressionizer.swift",
        "FractionNumberExtractor.swift",
        "Function.swift",
        "FunctionSet.swift",
        "Functions+Defaults.swift",
        "GroupedToken.swift",
        "HexNumberExtractor.swift",
        "IdentifierExtractor.swift",
        "LocalizedNumberExtractor.swift",
        "MathParserErrors.swift",
        "OctalNumberExtractor.swift",
        "Operator+Defaults.swift",
        "Operator.swift",
        "OperatorExtractor.swift",
        "OperatorSet.swift",
        "OperatorTokenSet.swift",
        "PeekingIterator.swift",
        "QuotedVariableExtractor.swift",
        "RawToken.swift",
        "ResolvedToken.swift",
        "RewriteRule+Defaults.swift",
        "RewriteRule.swift",
        "String.swift",
        "SubstitutionExtensions.swift",
        "TokenCharacterBuffer.swift",
        "TokenExtractor.swift",
        "TokenGrouper.swift",
        "TokenResolver.swift",
        "Tokenizer.swift",
        "VariableExtractor.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "Demo",
    "schemes" : [
      "Demo"
    ],
    "targets" : [
      "Demo"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Demo -destination platform=macOS,arch=arm64
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath /Users/admin/builder/spi-builder-workspace/.derivedData build -scheme Demo -destination platform=macOS,arch=arm64
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (1 target)
    Target 'Demo' in project 'Demo' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/ibtool --version --output-format xml1
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -arch arm64 -isysroot /Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/actool --version --output-format xml1
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-16.3.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: c07054c92a37624ed5c7e3d958a0b02e
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/c07054c92a37624ed5c7e3d958a0b02e.xcbuilddata
/Users/admin/builder/spi-builder-workspace/Demo.xcodeproj: error: No signing certificate "Mac Development" found: No "Mac Development" signing certificate matching team ID "654LUM7646" with a private key was found. (in target 'Demo' from project 'Demo')
/Users/admin/builder/spi-builder-workspace/Demo.xcodeproj: error: Missing package product 'MathParser' (in target 'Demo' from project 'Demo')
** BUILD FAILED **
The following build commands failed:
	Building project Demo with scheme Demo
(1 failure)
BUILD FAILURE 6.1 macosXcodebuild