The Swift Package Index logo.Swift Package Index

Build Information

Failed to build Mobius, reference master (74baa7), with Swift 6.0 for watchOS using Xcode 16.2 on 27 Mar 2026 03:33:14 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Mobius-Package -destination generic/platform=watchOS

Build Log

========================================
RunAll
========================================
Builder version: 4.69.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/spotify/Mobius.swift.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/spotify/Mobius.swift
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 74baa7e Merge pull request #209 from mjburghard/add-EmptyDisposable
Cloned https://github.com/spotify/Mobius.swift.git
Revision (git rev-parse @):
74baa7e07b86ae4c2673204a92230db397b8a6ae
SUCCESS checkout https://github.com/spotify/Mobius.swift.git at master
========================================
Build
========================================
Selected platform:         watchOS
Swift version:             6.0
Building package at path:  $PWD
https://github.com/spotify/Mobius.swift.git
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
Resolve Package Graph
Fetching from https://github.com/Quick/Nimble
Fetching from https://github.com/pointfreeco/swift-case-paths
Fetching from https://github.com/Quick/Quick
Fetching from https://github.com/mattgallagher/CwlPreconditionTesting.git
Fetching from https://github.com/mattgallagher/CwlCatchException.git
Fetching from https://github.com/apple/swift-argument-parser.git
Fetching from https://github.com/apple/swift-algorithms.git
Fetching from https://github.com/apple/swift-numerics.git
Creating working copy of package ‘swift-algorithms’
Checking out 1.2.1 of package ‘swift-algorithms’
Creating working copy of package ‘swift-numerics’
Checking out 1.1.1 of package ‘swift-numerics’
Creating working copy of package ‘Quick’
Checking out 7.6.2 of package ‘Quick’
Creating working copy of package ‘CwlCatchException’
Checking out 2.2.1 of package ‘CwlCatchException’
Creating working copy of package ‘swift-case-paths’
Checking out 0.10.1 of package ‘swift-case-paths’
Creating working copy of package ‘swift-argument-parser’
Checking out 1.7.1 of package ‘swift-argument-parser’
Creating working copy of package ‘Nimble’
Checking out 10.0.0 of package ‘Nimble’
Creating working copy of package ‘CwlPreconditionTesting’
Checking out 2.2.2 of package ‘CwlPreconditionTesting’
Resolve Package Graph
Resolved source packages:
  Nimble: https://github.com/Quick/Nimble @ 10.0.0
  CwlCatchException: https://github.com/mattgallagher/CwlCatchException.git @ 2.2.1
  swift-algorithms: https://github.com/apple/swift-algorithms.git @ 1.2.1
  swift-argument-parser: https://github.com/apple/swift-argument-parser.git @ 1.7.1
  swift-numerics: https://github.com/apple/swift-numerics.git @ 1.1.1
  Mobius: /Users/admin/builder/spi-builder-workspace
  swift-case-paths: https://github.com/pointfreeco/swift-case-paths @ 0.10.1
  Quick: https://github.com/Quick/Quick @ 7.6.2
  CwlPreconditionTesting: https://github.com/mattgallagher/CwlPreconditionTesting.git @ 2.2.2
resolved source packages: Nimble, CwlCatchException, swift-algorithms, swift-argument-parser, swift-numerics, Mobius, swift-case-paths, Quick, CwlPreconditionTesting
{
  "dependencies" : [
    {
      "identity" : "swift-case-paths",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.10.1",
            "upper_bound" : "0.11.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-case-paths"
    },
    {
      "identity" : "nimble",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "10.0.0",
            "upper_bound" : "11.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/Quick/Nimble"
    },
    {
      "identity" : "quick",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "7.0.0",
            "upper_bound" : "8.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/Quick/Quick"
    }
  ],
  "manifest_display_name" : "Mobius",
  "name" : "Mobius",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "10.0"
    },
    {
      "name" : "macos",
      "version" : "10.12"
    },
    {
      "name" : "tvos",
      "version" : "10.0"
    },
    {
      "name" : "watchos",
      "version" : "3.0"
    }
  ],
  "products" : [
    {
      "name" : "MobiusCore",
      "targets" : [
        "MobiusCore"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "MobiusExtras",
      "targets" : [
        "MobiusExtras"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "MobiusNimble",
      "targets" : [
        "MobiusNimble"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "MobiusTest",
      "targets" : [
        "MobiusTest"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "MobiusThrowableAssertion",
      "module_type" : "ClangTarget",
      "name" : "MobiusThrowableAssertion",
      "path" : "MobiusThrowableAssertion/Source",
      "sources" : [
        "MobiusThrowableAssertion.m"
      ],
      "type" : "library"
    },
    {
      "c99name" : "MobiusTestTests",
      "module_type" : "SwiftTarget",
      "name" : "MobiusTestTests",
      "path" : "MobiusTest/Test",
      "product_dependencies" : [
        "Nimble",
        "Quick"
      ],
      "sources" : [
        "DebugDiffTests.swift",
        "FirstMatchersTests.swift",
        "InitSpecTests.swift",
        "NextMatchersTests.swift",
        "TestUtil.swift",
        "UpdateSpecTests.swift"
      ],
      "target_dependencies" : [
        "MobiusTest"
      ],
      "type" : "test"
    },
    {
      "c99name" : "MobiusTest",
      "module_type" : "SwiftTarget",
      "name" : "MobiusTest",
      "path" : "MobiusTest/Source",
      "product_memberships" : [
        "MobiusNimble",
        "MobiusTest"
      ],
      "sources" : [
        "DebugDiff.swift",
        "FirstMatchers.swift",
        "InitSpec.swift",
        "MatcherUtils.swift",
        "NextMatchers.swift",
        "SimpleDiff.swift",
        "UpdateSpec.swift"
      ],
      "target_dependencies" : [
        "MobiusCore"
      ],
      "type" : "library"
    },
    {
      "c99name" : "MobiusNimbleTests",
      "module_type" : "SwiftTarget",
      "name" : "MobiusNimbleTests",
      "path" : "MobiusNimble/Test",
      "product_dependencies" : [
        "Quick"
      ],
      "sources" : [
        "NimbleFirstMatchersTests.swift",
        "NimbleNextMatchersTests.swift",
        "TestUtil.swift"
      ],
      "target_dependencies" : [
        "MobiusNimble"
      ],
      "type" : "test"
    },
    {
      "c99name" : "MobiusNimble",
      "module_type" : "SwiftTarget",
      "name" : "MobiusNimble",
      "path" : "MobiusNimble/Source",
      "product_dependencies" : [
        "Nimble"
      ],
      "product_memberships" : [
        "MobiusNimble"
      ],
      "sources" : [
        "NimbleFirstMatchers.swift",
        "NimbleNextMatchers.swift"
      ],
      "target_dependencies" : [
        "MobiusCore",
        "MobiusTest"
      ],
      "type" : "library"
    },
    {
      "c99name" : "MobiusExtrasTests",
      "module_type" : "SwiftTarget",
      "name" : "MobiusExtrasTests",
      "path" : "MobiusExtras/Test",
      "product_dependencies" : [
        "Nimble",
        "Quick"
      ],
      "sources" : [
        "ConnectableClassTests.swift",
        "ConnectableContramapTests.swift",
        "ConnectableMapTests.swift",
        "CopyableTests.swift",
        "EventSource+ExtensionsTests.swift",
        "WikiTutorialTest.swift"
      ],
      "target_dependencies" : [
        "MobiusCore",
        "MobiusExtras",
        "MobiusThrowableAssertion"
      ],
      "type" : "test"
    },
    {
      "c99name" : "MobiusExtras",
      "module_type" : "SwiftTarget",
      "name" : "MobiusExtras",
      "path" : "MobiusExtras/Source",
      "product_memberships" : [
        "MobiusExtras"
      ],
      "sources" : [
        "BeginnerLoop.swift",
        "ConnectableClass.swift",
        "ConnectableContramap.swift",
        "ConnectableMap.swift",
        "Copyable.swift",
        "EventSourceMap.swift",
        "SimpleLogger.swift"
      ],
      "target_dependencies" : [
        "MobiusCore"
      ],
      "type" : "library"
    },
    {
      "c99name" : "MobiusCoreTests",
      "module_type" : "SwiftTarget",
      "name" : "MobiusCoreTests",
      "path" : "MobiusCore/Test",
      "product_dependencies" : [
        "Nimble",
        "Quick"
      ],
      "sources" : [
        "AnonymousDisposableTests.swift",
        "AnyConnectionTests.swift",
        "AnyMobiusLoggerTests.swift",
        "AsyncDispatchQueueConnectableTests.swift",
        "CompositeDisposableTests.swift",
        "ConnectablePublisherTests.swift",
        "EffectHandlers/AnyEffectHandlerTests.swift",
        "EffectHandlers/CallbackTests.swift",
        "EffectHandlers/EffectHandlerTests.swift",
        "EffectHandlers/EffectRouterDSLTests.swift",
        "EffectHandlers/EffectRouterTests.swift",
        "EffectHandlers/EnumRouteTests.swift",
        "EventRouterDisposalLogicalRaceRegressionTest.swift",
        "EventSources/AnyEventSourceTests.swift",
        "EventSources/CompositeEventSourceBuilderTests.swift",
        "FirstTests.swift",
        "InitializationTests.swift",
        "LoggingInitiateTests.swift",
        "LoggingUpdateTests.swift",
        "MobiusControllerTests.swift",
        "MobiusHooksTests.swift",
        "MobiusIntegrationTests.swift",
        "MobiusLoopTests.swift",
        "NextTests.swift",
        "NonReentrancyTests.swift",
        "Task+DisposableTests.swift",
        "TestingErrorHandler.swift",
        "TestingUtil.swift",
        "WorkBagTests.swift"
      ],
      "target_dependencies" : [
        "MobiusCore",
        "MobiusThrowableAssertion"
      ],
      "type" : "test"
    },
    {
      "c99name" : "MobiusCore",
      "module_type" : "SwiftTarget",
      "name" : "MobiusCore",
      "path" : "MobiusCore/Source",
      "product_dependencies" : [
        "CasePaths"
      ],
      "product_memberships" : [
        "MobiusCore",
        "MobiusExtras",
        "MobiusNimble",
        "MobiusTest"
      ],
      "sources" : [
        "AsyncDispatchQueueConnectable.swift",
        "AsyncStartStopStateMachine.swift",
        "ConcurrentAccessDetector.swift",
        "Connectable.swift",
        "ConnectablePublisher.swift",
        "Connection.swift",
        "Consumer.swift",
        "Disposables/AnonymousDisposable.swift",
        "Disposables/CompositeDisposable.swift",
        "Disposables/Disposable.swift",
        "Disposables/EmptyDisposable.swift",
        "Disposables/Task+Disposable.swift",
        "EffectHandlers/EffectCallback.swift",
        "EffectHandlers/EffectExecutor.swift",
        "EffectHandlers/EffectHandler.swift",
        "EffectHandlers/EffectRouter.swift",
        "EffectHandlers/EffectRouterDSL.swift",
        "EffectHandlers/EnumRoute.swift",
        "EffectHandlers/ThreadSafeConnectable.swift",
        "EventSources/AnyEventSource.swift",
        "EventSources/CompositeEventSourceBuilder.swift",
        "EventSources/EventSource.swift",
        "First.swift",
        "Lock.swift",
        "LoggingAdaptors.swift",
        "Mobius.swift",
        "MobiusController.swift",
        "MobiusHooks.swift",
        "MobiusLogger.swift",
        "MobiusLoop.swift",
        "Next.swift",
        "WorkBag.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "Mobius-Package",
      "MobiusCore",
      "MobiusExtras",
      "MobiusNimble",
      "MobiusTest"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Mobius-Package -destination generic/platform=watchOS
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 Mobius-Package -destination generic/platform=watchOS
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEDerivedDataPathOverride = /Users/admin/builder/spi-builder-workspace/.derivedData
    IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
  swift-numerics: https://github.com/apple/swift-numerics.git @ 1.1.1
  Mobius: /Users/admin/builder/spi-builder-workspace
  swift-case-paths: https://github.com/pointfreeco/swift-case-paths @ 0.10.1
  CwlPreconditionTesting: https://github.com/mattgallagher/CwlPreconditionTesting.git @ 2.2.2
  swift-algorithms: https://github.com/apple/swift-algorithms.git @ 1.2.1
  Quick: https://github.com/Quick/Quick @ 7.6.2
  Nimble: https://github.com/Quick/Nimble @ 10.0.0
  CwlCatchException: https://github.com/mattgallagher/CwlCatchException.git @ 2.2.1
  swift-argument-parser: https://github.com/apple/swift-argument-parser.git @ 1.7.1
Prepare packages
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (12 targets)
    Target 'MobiusTest' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusTest' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
    Target 'MobiusNimble' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusNimble' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusTest' in project 'Mobius'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
        ➜ Explicit dependency on target 'Nimble' in project 'Nimble'
    Target 'MobiusNimble' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusTest' in project 'Mobius'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
        ➜ Explicit dependency on target 'Nimble' in project 'Nimble'
    Target 'Nimble' in project 'Nimble'
        ➜ Explicit dependency on target 'Nimble' in project 'Nimble'
    Target 'Nimble' in project 'Nimble' (no dependencies)
    Target 'MobiusTest' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
    Target 'MobiusExtras' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusExtras' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
    Target 'MobiusExtras' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
    Target 'MobiusCore' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
    Target 'MobiusCore' in project 'Mobius'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
    Target 'CasePaths' in project 'swift-case-paths'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
    Target 'CasePaths' in project 'swift-case-paths' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
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/clang -v -E -dM -isysroot /Applications/Xcode-16.2.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS11.2.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.2.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: fab336cf29eda8d05f271ef454093c92
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/fab336cf29eda8d05f271ef454093c92.xcbuilddata
error: The package product 'CasePaths' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusCore' from project 'Mobius')
error: The package product 'CasePaths' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusTest' from project 'Mobius')
error: The package product 'CasePaths' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusNimble' from project 'Mobius')
error: The package product 'Nimble' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusNimble' from project 'Mobius')
error: The package product 'CasePaths' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusExtras' from project 'Mobius')
** BUILD FAILED **
The following build commands failed:
	Building workspace spi-builder-workspace with scheme Mobius-Package
(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
Resolve Package Graph
Resolved source packages:
  swift-algorithms: https://github.com/apple/swift-algorithms.git @ 1.2.1
  CwlPreconditionTesting: https://github.com/mattgallagher/CwlPreconditionTesting.git @ 2.2.2
  swift-case-paths: https://github.com/pointfreeco/swift-case-paths @ 0.10.1
  CwlCatchException: https://github.com/mattgallagher/CwlCatchException.git @ 2.2.1
  swift-argument-parser: https://github.com/apple/swift-argument-parser.git @ 1.7.1
  Quick: https://github.com/Quick/Quick @ 7.6.2
  Mobius: /Users/admin/builder/spi-builder-workspace
  Nimble: https://github.com/Quick/Nimble @ 10.0.0
  swift-numerics: https://github.com/apple/swift-numerics.git @ 1.1.1
resolved source packages: swift-algorithms, CwlPreconditionTesting, swift-case-paths, CwlCatchException, swift-argument-parser, Quick, Mobius, Nimble, swift-numerics
{
  "dependencies" : [
    {
      "identity" : "swift-case-paths",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.10.1",
            "upper_bound" : "0.11.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-case-paths"
    },
    {
      "identity" : "nimble",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "10.0.0",
            "upper_bound" : "11.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/Quick/Nimble"
    },
    {
      "identity" : "quick",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "7.0.0",
            "upper_bound" : "8.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/Quick/Quick"
    }
  ],
  "manifest_display_name" : "Mobius",
  "name" : "Mobius",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "10.0"
    },
    {
      "name" : "macos",
      "version" : "10.12"
    },
    {
      "name" : "tvos",
      "version" : "10.0"
    },
    {
      "name" : "watchos",
      "version" : "3.0"
    }
  ],
  "products" : [
    {
      "name" : "MobiusCore",
      "targets" : [
        "MobiusCore"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "MobiusExtras",
      "targets" : [
        "MobiusExtras"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "MobiusNimble",
      "targets" : [
        "MobiusNimble"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "MobiusTest",
      "targets" : [
        "MobiusTest"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "MobiusThrowableAssertion",
      "module_type" : "ClangTarget",
      "name" : "MobiusThrowableAssertion",
      "path" : "MobiusThrowableAssertion/Source",
      "sources" : [
        "MobiusThrowableAssertion.m"
      ],
      "type" : "library"
    },
    {
      "c99name" : "MobiusTestTests",
      "module_type" : "SwiftTarget",
      "name" : "MobiusTestTests",
      "path" : "MobiusTest/Test",
      "product_dependencies" : [
        "Nimble",
        "Quick"
      ],
      "sources" : [
        "DebugDiffTests.swift",
        "FirstMatchersTests.swift",
        "InitSpecTests.swift",
        "NextMatchersTests.swift",
        "TestUtil.swift",
        "UpdateSpecTests.swift"
      ],
      "target_dependencies" : [
        "MobiusTest"
      ],
      "type" : "test"
    },
    {
      "c99name" : "MobiusTest",
      "module_type" : "SwiftTarget",
      "name" : "MobiusTest",
      "path" : "MobiusTest/Source",
      "product_memberships" : [
        "MobiusNimble",
        "MobiusTest"
      ],
      "sources" : [
        "DebugDiff.swift",
        "FirstMatchers.swift",
        "InitSpec.swift",
        "MatcherUtils.swift",
        "NextMatchers.swift",
        "SimpleDiff.swift",
        "UpdateSpec.swift"
      ],
      "target_dependencies" : [
        "MobiusCore"
      ],
      "type" : "library"
    },
    {
      "c99name" : "MobiusNimbleTests",
      "module_type" : "SwiftTarget",
      "name" : "MobiusNimbleTests",
      "path" : "MobiusNimble/Test",
      "product_dependencies" : [
        "Quick"
      ],
      "sources" : [
        "NimbleFirstMatchersTests.swift",
        "NimbleNextMatchersTests.swift",
        "TestUtil.swift"
      ],
      "target_dependencies" : [
        "MobiusNimble"
      ],
      "type" : "test"
    },
    {
      "c99name" : "MobiusNimble",
      "module_type" : "SwiftTarget",
      "name" : "MobiusNimble",
      "path" : "MobiusNimble/Source",
      "product_dependencies" : [
        "Nimble"
      ],
      "product_memberships" : [
        "MobiusNimble"
      ],
      "sources" : [
        "NimbleFirstMatchers.swift",
        "NimbleNextMatchers.swift"
      ],
      "target_dependencies" : [
        "MobiusCore",
        "MobiusTest"
      ],
      "type" : "library"
    },
    {
      "c99name" : "MobiusExtrasTests",
      "module_type" : "SwiftTarget",
      "name" : "MobiusExtrasTests",
      "path" : "MobiusExtras/Test",
      "product_dependencies" : [
        "Nimble",
        "Quick"
      ],
      "sources" : [
        "ConnectableClassTests.swift",
        "ConnectableContramapTests.swift",
        "ConnectableMapTests.swift",
        "CopyableTests.swift",
        "EventSource+ExtensionsTests.swift",
        "WikiTutorialTest.swift"
      ],
      "target_dependencies" : [
        "MobiusCore",
        "MobiusExtras",
        "MobiusThrowableAssertion"
      ],
      "type" : "test"
    },
    {
      "c99name" : "MobiusExtras",
      "module_type" : "SwiftTarget",
      "name" : "MobiusExtras",
      "path" : "MobiusExtras/Source",
      "product_memberships" : [
        "MobiusExtras"
      ],
      "sources" : [
        "BeginnerLoop.swift",
        "ConnectableClass.swift",
        "ConnectableContramap.swift",
        "ConnectableMap.swift",
        "Copyable.swift",
        "EventSourceMap.swift",
        "SimpleLogger.swift"
      ],
      "target_dependencies" : [
        "MobiusCore"
      ],
      "type" : "library"
    },
    {
      "c99name" : "MobiusCoreTests",
      "module_type" : "SwiftTarget",
      "name" : "MobiusCoreTests",
      "path" : "MobiusCore/Test",
      "product_dependencies" : [
        "Nimble",
        "Quick"
      ],
      "sources" : [
        "AnonymousDisposableTests.swift",
        "AnyConnectionTests.swift",
        "AnyMobiusLoggerTests.swift",
        "AsyncDispatchQueueConnectableTests.swift",
        "CompositeDisposableTests.swift",
        "ConnectablePublisherTests.swift",
        "EffectHandlers/AnyEffectHandlerTests.swift",
        "EffectHandlers/CallbackTests.swift",
        "EffectHandlers/EffectHandlerTests.swift",
        "EffectHandlers/EffectRouterDSLTests.swift",
        "EffectHandlers/EffectRouterTests.swift",
        "EffectHandlers/EnumRouteTests.swift",
        "EventRouterDisposalLogicalRaceRegressionTest.swift",
        "EventSources/AnyEventSourceTests.swift",
        "EventSources/CompositeEventSourceBuilderTests.swift",
        "FirstTests.swift",
        "InitializationTests.swift",
        "LoggingInitiateTests.swift",
        "LoggingUpdateTests.swift",
        "MobiusControllerTests.swift",
        "MobiusHooksTests.swift",
        "MobiusIntegrationTests.swift",
        "MobiusLoopTests.swift",
        "NextTests.swift",
        "NonReentrancyTests.swift",
        "Task+DisposableTests.swift",
        "TestingErrorHandler.swift",
        "TestingUtil.swift",
        "WorkBagTests.swift"
      ],
      "target_dependencies" : [
        "MobiusCore",
        "MobiusThrowableAssertion"
      ],
      "type" : "test"
    },
    {
      "c99name" : "MobiusCore",
      "module_type" : "SwiftTarget",
      "name" : "MobiusCore",
      "path" : "MobiusCore/Source",
      "product_dependencies" : [
        "CasePaths"
      ],
      "product_memberships" : [
        "MobiusCore",
        "MobiusExtras",
        "MobiusNimble",
        "MobiusTest"
      ],
      "sources" : [
        "AsyncDispatchQueueConnectable.swift",
        "AsyncStartStopStateMachine.swift",
        "ConcurrentAccessDetector.swift",
        "Connectable.swift",
        "ConnectablePublisher.swift",
        "Connection.swift",
        "Consumer.swift",
        "Disposables/AnonymousDisposable.swift",
        "Disposables/CompositeDisposable.swift",
        "Disposables/Disposable.swift",
        "Disposables/EmptyDisposable.swift",
        "Disposables/Task+Disposable.swift",
        "EffectHandlers/EffectCallback.swift",
        "EffectHandlers/EffectExecutor.swift",
        "EffectHandlers/EffectHandler.swift",
        "EffectHandlers/EffectRouter.swift",
        "EffectHandlers/EffectRouterDSL.swift",
        "EffectHandlers/EnumRoute.swift",
        "EffectHandlers/ThreadSafeConnectable.swift",
        "EventSources/AnyEventSource.swift",
        "EventSources/CompositeEventSourceBuilder.swift",
        "EventSources/EventSource.swift",
        "First.swift",
        "Lock.swift",
        "LoggingAdaptors.swift",
        "Mobius.swift",
        "MobiusController.swift",
        "MobiusHooks.swift",
        "MobiusLogger.swift",
        "MobiusLoop.swift",
        "Next.swift",
        "WorkBag.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "Mobius-Package",
      "MobiusCore",
      "MobiusExtras",
      "MobiusNimble",
      "MobiusTest"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Mobius-Package -destination generic/platform=watchOS
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 Mobius-Package -destination generic/platform=watchOS
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEDerivedDataPathOverride = /Users/admin/builder/spi-builder-workspace/.derivedData
    IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
Resolved source packages:
  CwlPreconditionTesting: https://github.com/mattgallagher/CwlPreconditionTesting.git @ 2.2.2
  swift-algorithms: https://github.com/apple/swift-algorithms.git @ 1.2.1
  swift-case-paths: https://github.com/pointfreeco/swift-case-paths @ 0.10.1
  swift-argument-parser: https://github.com/apple/swift-argument-parser.git @ 1.7.1
  Quick: https://github.com/Quick/Quick @ 7.6.2
  swift-numerics: https://github.com/apple/swift-numerics.git @ 1.1.1
  CwlCatchException: https://github.com/mattgallagher/CwlCatchException.git @ 2.2.1
  Nimble: https://github.com/Quick/Nimble @ 10.0.0
  Mobius: /Users/admin/builder/spi-builder-workspace
Prepare packages
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (12 targets)
    Target 'MobiusTest' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusTest' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
    Target 'MobiusNimble' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusNimble' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusTest' in project 'Mobius'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
        ➜ Explicit dependency on target 'Nimble' in project 'Nimble'
    Target 'MobiusNimble' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusTest' in project 'Mobius'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
        ➜ Explicit dependency on target 'Nimble' in project 'Nimble'
    Target 'Nimble' in project 'Nimble'
        ➜ Explicit dependency on target 'Nimble' in project 'Nimble'
    Target 'Nimble' in project 'Nimble' (no dependencies)
    Target 'MobiusTest' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
    Target 'MobiusExtras' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusExtras' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
    Target 'MobiusExtras' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
    Target 'MobiusCore' in project 'Mobius'
        ➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
    Target 'MobiusCore' in project 'Mobius'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
    Target 'CasePaths' in project 'swift-case-paths'
        ➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
    Target 'CasePaths' in project 'swift-case-paths' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
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/clang -v -E -dM -isysroot /Applications/Xcode-16.2.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS11.2.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-16.2.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: fab336cf29eda8d05f271ef454093c92
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/fab336cf29eda8d05f271ef454093c92.xcbuilddata
error: The package product 'CasePaths' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusCore' from project 'Mobius')
error: The package product 'CasePaths' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusTest' from project 'Mobius')
error: The package product 'CasePaths' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusExtras' from project 'Mobius')
error: The package product 'CasePaths' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusNimble' from project 'Mobius')
error: The package product 'Nimble' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusNimble' from project 'Mobius')
** BUILD FAILED **
The following build commands failed:
	Building workspace spi-builder-workspace with scheme Mobius-Package
(1 failure)
BUILD FAILURE 6.0 watchOS