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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 RxFlow, reference main (26b3e8), with Swift 6.0 for macOS (Xcode) using Xcode 16.2 on 18 Apr 2025 02:19:30 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme RxFlow -destination platform=macOS,arch=arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.60.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/RxSwiftCommunity/RxFlow.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/RxSwiftCommunity/RxFlow
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 26b3e81 project: bump to 2.13.2
Cloned https://github.com/RxSwiftCommunity/RxFlow.git
Revision (git rev-parse @):
26b3e8137c6d7a1dbd98a599b3ccb1e4314293c5
SUCCESS checkout https://github.com/RxSwiftCommunity/RxFlow.git at main
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.0
Building package at path:  $PWD
https://github.com/RxSwiftCommunity/RxFlow.git
https://github.com/RxSwiftCommunity/RxFlow.git
{
  "dependencies" : [
    {
      "identity" : "rxswift",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "6.0.0",
            "upper_bound" : "7.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/ReactiveX/RxSwift.git"
    }
  ],
  "manifest_display_name" : "RxFlow",
  "name" : "RxFlow",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "9.0"
    }
  ],
  "products" : [
    {
      "name" : "RxFlow",
      "targets" : [
        "RxFlow"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "RxFlowTests",
      "module_type" : "SwiftTarget",
      "name" : "RxFlowTests",
      "path" : "RxFlowTests",
      "product_dependencies" : [
        "RxBlocking",
        "RxTest"
      ],
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/RxFlowTests/TestData/TestUIViewController.storyboard",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "Flow+PresentableTests.swift",
        "FlowContributorTests.swift",
        "FlowCoordinatorTests.swift",
        "FlowsTests.swift",
        "ObservableType+PausableTests.swift",
        "StepperTests.swift",
        "SyncronizableTests.swift",
        "TestData/TestUIViewController.swift",
        "UIViewController+PresentableTests.swift"
      ],
      "target_dependencies" : [
        "RxFlow"
      ],
      "type" : "test"
    },
    {
      "c99name" : "RxFlow",
      "module_type" : "SwiftTarget",
      "name" : "RxFlow",
      "path" : "RxFlow",
      "product_dependencies" : [
        "RxSwift",
        "RxCocoa"
      ],
      "product_memberships" : [
        "RxFlow"
      ],
      "sources" : [
        "Deprecated/DeprecatedFlowCoordinator.swift",
        "Deprecated/DeprecatedFlows.swift",
        "Extensions/ObservableType+Pausable.swift",
        "Extensions/Reactive+UIViewController.swift",
        "Extensions/Reactive+UIWindow.swift",
        "Extensions/UIViewController+Presentable.swift",
        "Extensions/UIWindow+Presentable.swift",
        "Flow.swift",
        "FlowContributor.swift",
        "FlowCoordinator.swift",
        "Presentable.swift",
        "Step.swift",
        "Stepper.swift",
        "Synchronizable.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.4"
}
Command line invocation:
    /Applications/Xcode-16.2.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEPackageSupportUseBuiltinSCM = YES
resolved source packages:
{
  "dependencies" : [
    {
      "identity" : "rxswift",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "6.0.0",
            "upper_bound" : "7.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/ReactiveX/RxSwift.git"
    }
  ],
  "manifest_display_name" : "RxFlow",
  "name" : "RxFlow",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "9.0"
    }
  ],
  "products" : [
    {
      "name" : "RxFlow",
      "targets" : [
        "RxFlow"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "RxFlowTests",
      "module_type" : "SwiftTarget",
      "name" : "RxFlowTests",
      "path" : "RxFlowTests",
      "product_dependencies" : [
        "RxBlocking",
        "RxTest"
      ],
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/RxFlowTests/TestData/TestUIViewController.storyboard",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "Flow+PresentableTests.swift",
        "FlowContributorTests.swift",
        "FlowCoordinatorTests.swift",
        "FlowsTests.swift",
        "ObservableType+PausableTests.swift",
        "StepperTests.swift",
        "SyncronizableTests.swift",
        "TestData/TestUIViewController.swift",
        "UIViewController+PresentableTests.swift"
      ],
      "target_dependencies" : [
        "RxFlow"
      ],
      "type" : "test"
    },
    {
      "c99name" : "RxFlow",
      "module_type" : "SwiftTarget",
      "name" : "RxFlow",
      "path" : "RxFlow",
      "product_dependencies" : [
        "RxSwift",
        "RxCocoa"
      ],
      "product_memberships" : [
        "RxFlow"
      ],
      "sources" : [
        "Deprecated/DeprecatedFlowCoordinator.swift",
        "Deprecated/DeprecatedFlows.swift",
        "Extensions/ObservableType+Pausable.swift",
        "Extensions/Reactive+UIViewController.swift",
        "Extensions/Reactive+UIWindow.swift",
        "Extensions/UIViewController+Presentable.swift",
        "Extensions/UIWindow+Presentable.swift",
        "Flow.swift",
        "FlowContributor.swift",
        "FlowCoordinator.swift",
        "Presentable.swift",
        "Step.swift",
        "Stepper.swift",
        "Synchronizable.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.4"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "RxFlow",
    "schemes" : [
      "RxFlow"
    ],
    "targets" : [
      "RxFlow",
      "RxFlowTests"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme RxFlow -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-16.2.0.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 RxFlow -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"
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEDerivedDataPathOverride = /Users/admin/builder/spi-builder-workspace/.derivedData
    IDEPackageSupportUseBuiltinSCM = YES
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
Prepare packages
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (1 target)
    Target 'RxFlow' in project 'RxFlow' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-16.2.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-16.2.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.2.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.2.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -arch arm64 -isysroot /Applications/Xcode-16.2.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.2.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.2.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-16.2.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: a3e9d6105d6d05790f960516ae13827b
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/a3e9d6105d6d05790f960516ae13827b.xcbuilddata
error: There is no XCFramework found at '/Users/admin/builder/spi-builder-workspace/Carthage/Build/RxSwift.xcframework'. (in target 'RxFlow' from project 'RxFlow')
error: There is no XCFramework found at '/Users/admin/builder/spi-builder-workspace/Carthage/Build/RxCocoa.xcframework'. (in target 'RxFlow' from project 'RxFlow')
error: There is no XCFramework found at '/Users/admin/builder/spi-builder-workspace/Carthage/Build/RxRelay.xcframework'. (in target 'RxFlow' from project 'RxFlow')
/Users/admin/builder/spi-builder-workspace/RxFlow.xcodeproj: warning: tasks in 'Copy Headers' are delayed by unsandboxed script phases; set ENABLE_USER_SCRIPT_SANDBOXING=YES to enable sandboxing (in target 'RxFlow' from project 'RxFlow')
warning: Run script build phase '⚙ Swiftlint Code Analysis' will be run during every build because it does not specify any outputs. To address this issue, either add output dependencies to the script phase, or configure it to run in every build by unchecking "Based on dependency analysis" in the script phase. (in target 'RxFlow' from project 'RxFlow')
--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:fa7026e241c44d786f8f861ffae71411fcc45864, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:fa7026e241c44d786f8f861ffae71411fcc45864, name:My Mac }
** BUILD FAILED **
The following build commands failed:
	Building project RxFlow with scheme RxFlow
(1 failure)
Command line invocation:
    /Applications/Xcode-16.2.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEPackageSupportUseBuiltinSCM = YES
resolved source packages:
{
  "dependencies" : [
    {
      "identity" : "rxswift",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "6.0.0",
            "upper_bound" : "7.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/ReactiveX/RxSwift.git"
    }
  ],
  "manifest_display_name" : "RxFlow",
  "name" : "RxFlow",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "9.0"
    }
  ],
  "products" : [
    {
      "name" : "RxFlow",
      "targets" : [
        "RxFlow"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "RxFlowTests",
      "module_type" : "SwiftTarget",
      "name" : "RxFlowTests",
      "path" : "RxFlowTests",
      "product_dependencies" : [
        "RxBlocking",
        "RxTest"
      ],
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/RxFlowTests/TestData/TestUIViewController.storyboard",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "Flow+PresentableTests.swift",
        "FlowContributorTests.swift",
        "FlowCoordinatorTests.swift",
        "FlowsTests.swift",
        "ObservableType+PausableTests.swift",
        "StepperTests.swift",
        "SyncronizableTests.swift",
        "TestData/TestUIViewController.swift",
        "UIViewController+PresentableTests.swift"
      ],
      "target_dependencies" : [
        "RxFlow"
      ],
      "type" : "test"
    },
    {
      "c99name" : "RxFlow",
      "module_type" : "SwiftTarget",
      "name" : "RxFlow",
      "path" : "RxFlow",
      "product_dependencies" : [
        "RxSwift",
        "RxCocoa"
      ],
      "product_memberships" : [
        "RxFlow"
      ],
      "sources" : [
        "Deprecated/DeprecatedFlowCoordinator.swift",
        "Deprecated/DeprecatedFlows.swift",
        "Extensions/ObservableType+Pausable.swift",
        "Extensions/Reactive+UIViewController.swift",
        "Extensions/Reactive+UIWindow.swift",
        "Extensions/UIViewController+Presentable.swift",
        "Extensions/UIWindow+Presentable.swift",
        "Flow.swift",
        "FlowContributor.swift",
        "FlowCoordinator.swift",
        "Presentable.swift",
        "Step.swift",
        "Stepper.swift",
        "Synchronizable.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.4"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "RxFlow",
    "schemes" : [
      "RxFlow"
    ],
    "targets" : [
      "RxFlow",
      "RxFlowTests"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme RxFlow -destination platform=macOS,arch=arm64
Command line invocation:
    /Applications/Xcode-16.2.0.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 RxFlow -destination platform=macOS,arch=arm64
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEDerivedDataPathOverride = /Users/admin/builder/spi-builder-workspace/.derivedData
    IDEPackageSupportUseBuiltinSCM = YES
Prepare packages
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (1 target)
    Target 'RxFlow' in project 'RxFlow' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-16.2.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-16.2.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.2.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.2.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -arch arm64 -isysroot /Applications/Xcode-16.2.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.2.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.2.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-16.2.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: cba406afc8a4d4552579e4d19671f179
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/cba406afc8a4d4552579e4d19671f179.xcbuilddata
error: There is no XCFramework found at '/Users/admin/builder/spi-builder-workspace/Carthage/Build/RxSwift.xcframework'. (in target 'RxFlow' from project 'RxFlow')
error: There is no XCFramework found at '/Users/admin/builder/spi-builder-workspace/Carthage/Build/RxCocoa.xcframework'. (in target 'RxFlow' from project 'RxFlow')
error: There is no XCFramework found at '/Users/admin/builder/spi-builder-workspace/Carthage/Build/RxRelay.xcframework'. (in target 'RxFlow' from project 'RxFlow')
/Users/admin/builder/spi-builder-workspace/RxFlow.xcodeproj: warning: tasks in 'Copy Headers' are delayed by unsandboxed script phases; set ENABLE_USER_SCRIPT_SANDBOXING=YES to enable sandboxing (in target 'RxFlow' from project 'RxFlow')
warning: Run script build phase '⚙ Swiftlint Code Analysis' will be run during every build because it does not specify any outputs. To address this issue, either add output dependencies to the script phase, or configure it to run in every build by unchecking "Based on dependency analysis" in the script phase. (in target 'RxFlow' from project 'RxFlow')
--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:fa7026e241c44d786f8f861ffae71411fcc45864, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:fa7026e241c44d786f8f861ffae71411fcc45864, name:My Mac }
** BUILD FAILED **
The following build commands failed:
	Building project RxFlow with scheme RxFlow
(1 failure)
BUILD FAILURE 6.0 macosXcodebuild