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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 Firefly, reference main (0235d2), with Swift 6.1 for macOS (Xcode) using Xcode 16.3 on 27 Apr 2025 23:12:36 UTC.

Build Command

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

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/ActuallyTaylor/Firefly.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/ActuallyTaylor/Firefly
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 0235d2e Merge pull request #19 from ActuallyTaylor/ActuallyTaylor-patch-1
Cloned https://github.com/ActuallyTaylor/Firefly.git
Revision (git rev-parse @):
0235d2e82686a2db6acf5b00cbc8dc6331c97f03
SUCCESS checkout https://github.com/ActuallyTaylor/Firefly.git at main
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.1
Building package at path:  $PWD
https://github.com/ActuallyTaylor/Firefly.git
https://github.com/ActuallyTaylor/Firefly.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Firefly",
  "name" : "Firefly",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "Firefly",
      "targets" : [
        "Firefly"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "FireflyTests",
      "module_type" : "SwiftTarget",
      "name" : "FireflyTests",
      "path" : "Tests",
      "sources" : [
        "FireflyTests/FireflyTextViewTests.swift"
      ],
      "target_dependencies" : [
        "Firefly"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Firefly",
      "module_type" : "SwiftTarget",
      "name" : "Firefly",
      "path" : "Sources",
      "product_memberships" : [
        "Firefly"
      ],
      "sources" : [
        "Extensions/AttributedType.swift",
        "Extensions/Comparable + Clamped.swift",
        "Extensions/Dispatch.swift",
        "Extensions/NSTextView + Bounding Rect.swift",
        "Extensions/Range+Encompasses.swift",
        "Extensions/Safe Array.swift",
        "Extensions/String+NSRange.swift",
        "Extensions/UIColor+HexInit.swift",
        "Highlighter/Data/Languages.swift",
        "Highlighter/Data/Themes.swift",
        "Highlighter/Markdown.swift",
        "Highlighter/Syntax/Definition.swift",
        "Highlighter/Syntax/Syntax.swift",
        "Highlighter/Syntax/Theme.swift",
        "Highlighter/SyntaxAttributedString.swift",
        "Highlighter/Tokens/Token.swift",
        "Utility/KeyCommand.swift",
        "Views/FireflySyntaxView + TextDelegate.swift",
        "Views/FireflySyntaxView.swift",
        "Views/FireflyTextView.swift",
        "Views/FireflyTextViewDelegate.swift",
        "Views/Line Numbers/LineNumberLayoutManager.swift",
        "Views/Line Numbers/LineNumberRulerView.swift",
        "Views/Swift UI/FireflySyntaxEditor.swift",
        "Views/UIAppKitBirdge.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
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" : "Firefly",
  "name" : "Firefly",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "Firefly",
      "targets" : [
        "Firefly"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "FireflyTests",
      "module_type" : "SwiftTarget",
      "name" : "FireflyTests",
      "path" : "Tests",
      "sources" : [
        "FireflyTests/FireflyTextViewTests.swift"
      ],
      "target_dependencies" : [
        "Firefly"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Firefly",
      "module_type" : "SwiftTarget",
      "name" : "Firefly",
      "path" : "Sources",
      "product_memberships" : [
        "Firefly"
      ],
      "sources" : [
        "Extensions/AttributedType.swift",
        "Extensions/Comparable + Clamped.swift",
        "Extensions/Dispatch.swift",
        "Extensions/NSTextView + Bounding Rect.swift",
        "Extensions/Range+Encompasses.swift",
        "Extensions/Safe Array.swift",
        "Extensions/String+NSRange.swift",
        "Extensions/UIColor+HexInit.swift",
        "Highlighter/Data/Languages.swift",
        "Highlighter/Data/Themes.swift",
        "Highlighter/Markdown.swift",
        "Highlighter/Syntax/Definition.swift",
        "Highlighter/Syntax/Syntax.swift",
        "Highlighter/Syntax/Theme.swift",
        "Highlighter/SyntaxAttributedString.swift",
        "Highlighter/Tokens/Token.swift",
        "Utility/KeyCommand.swift",
        "Views/FireflySyntaxView + TextDelegate.swift",
        "Views/FireflySyntaxView.swift",
        "Views/FireflyTextView.swift",
        "Views/FireflyTextViewDelegate.swift",
        "Views/Line Numbers/LineNumberLayoutManager.swift",
        "Views/Line Numbers/LineNumberRulerView.swift",
        "Views/Swift UI/FireflySyntaxEditor.swift",
        "Views/UIAppKitBirdge.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "Firefly",
    "schemes" : [
      "Firefly"
    ],
    "targets" : [
      "Firefly"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Firefly -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 Firefly -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 'Firefly' in project 'Firefly' (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/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/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: bb1b480965b557e7d33b80f52566b8c2
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/bb1b480965b557e7d33b80f52566b8c2.xcbuilddata
/Users/admin/builder/spi-builder-workspace/Firefly.xcodeproj: error: No signing certificate "Mac Development" found: No "Mac Development" signing certificate matching team ID "TK7Y3X86W7" with a private key was found. (in target 'Firefly' from project 'Firefly')
--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:d29333c9293cac2827d7a45c10c2d36479faed7d, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:d29333c9293cac2827d7a45c10c2d36479faed7d, name:My Mac }
** BUILD FAILED **
The following build commands failed:
	Building project Firefly with scheme Firefly
(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" : "Firefly",
  "name" : "Firefly",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "Firefly",
      "targets" : [
        "Firefly"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "FireflyTests",
      "module_type" : "SwiftTarget",
      "name" : "FireflyTests",
      "path" : "Tests",
      "sources" : [
        "FireflyTests/FireflyTextViewTests.swift"
      ],
      "target_dependencies" : [
        "Firefly"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Firefly",
      "module_type" : "SwiftTarget",
      "name" : "Firefly",
      "path" : "Sources",
      "product_memberships" : [
        "Firefly"
      ],
      "sources" : [
        "Extensions/AttributedType.swift",
        "Extensions/Comparable + Clamped.swift",
        "Extensions/Dispatch.swift",
        "Extensions/NSTextView + Bounding Rect.swift",
        "Extensions/Range+Encompasses.swift",
        "Extensions/Safe Array.swift",
        "Extensions/String+NSRange.swift",
        "Extensions/UIColor+HexInit.swift",
        "Highlighter/Data/Languages.swift",
        "Highlighter/Data/Themes.swift",
        "Highlighter/Markdown.swift",
        "Highlighter/Syntax/Definition.swift",
        "Highlighter/Syntax/Syntax.swift",
        "Highlighter/Syntax/Theme.swift",
        "Highlighter/SyntaxAttributedString.swift",
        "Highlighter/Tokens/Token.swift",
        "Utility/KeyCommand.swift",
        "Views/FireflySyntaxView + TextDelegate.swift",
        "Views/FireflySyntaxView.swift",
        "Views/FireflyTextView.swift",
        "Views/FireflyTextViewDelegate.swift",
        "Views/Line Numbers/LineNumberLayoutManager.swift",
        "Views/Line Numbers/LineNumberRulerView.swift",
        "Views/Swift UI/FireflySyntaxEditor.swift",
        "Views/UIAppKitBirdge.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "Firefly",
    "schemes" : [
      "Firefly"
    ],
    "targets" : [
      "Firefly"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Firefly -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 Firefly -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 'Firefly' in project 'Firefly' (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/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/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: 235ce1ecc81e3b04366fba849b77e3dc
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/235ce1ecc81e3b04366fba849b77e3dc.xcbuilddata
/Users/admin/builder/spi-builder-workspace/Firefly.xcodeproj: error: No signing certificate "Mac Development" found: No "Mac Development" signing certificate matching team ID "TK7Y3X86W7" with a private key was found. (in target 'Firefly' from project 'Firefly')
--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:d29333c9293cac2827d7a45c10c2d36479faed7d, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:d29333c9293cac2827d7a45c10c2d36479faed7d, name:My Mac }
** BUILD FAILED **
The following build commands failed:
	Building project Firefly with scheme Firefly
(1 failure)
BUILD FAILURE 6.1 macosXcodebuild