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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 Flow with Swift 5.9 for watchOS using Xcode 15.2.

Build Command

Build command unavailable

Build Log

========================================
RunAll
========================================
Builder version: 4.54.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/iZettle/Flow.git
Reference: 1.12.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/iZettle/Flow
 * tag               1.12.1     -> FETCH_HEAD
HEAD is now at c3e69f9 Remove `dynamic` from package definition (#129)
Cloned https://github.com/iZettle/Flow.git
Revision (git rev-parse @):
c3e69f924f046207487948dcad55826343a122d5
SUCCESS checkout https://github.com/iZettle/Flow.git at 1.12.1
========================================
Build
========================================
Selected platform:         watchOS
Swift version:             5.9
Building package at path:  $PWD
https://github.com/iZettle/Flow.git
Command line invocation:
    /Applications/Xcode-15.2.0.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" : [
  ],
  "manifest_display_name" : "Flow",
  "name" : "Flow",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Flow",
      "targets" : [
        "Flow"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "FlowTests",
      "module_type" : "SwiftTarget",
      "name" : "FlowTests",
      "path" : "FlowTests",
      "sources" : [
        "CallbackerTests.swift",
        "DelegateTests.swift",
        "EitherTests.swift",
        "EventListenerTests.swift",
        "Future+CombineTests.swift",
        "FutureAdditionsTests.swift",
        "FutureBasicTests.swift",
        "FutureQueueTests.swift",
        "FutureRepeatTests.swift",
        "FutureSchedulingTests.swift",
        "FutureSplitTests.swift",
        "FutureUtilitiesTests.swift",
        "MemoryUtilsTests.swift",
        "MultipleContinuationsTests.swift",
        "PrefetchTests.swift",
        "PropertyTests.swift",
        "RecursiveTests.swift",
        "Signal+CombineTests.swift",
        "SignalConcurrenceyTests.swift",
        "SignalProviderTests+Internal.swift",
        "SignalProviderTests.swift",
        "SignalTests.swift",
        "TestUtilities.swift",
        "UIViewSignalTests.swift"
      ],
      "target_dependencies" : [
        "Flow"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Flow",
      "module_type" : "SwiftTarget",
      "name" : "Flow",
      "path" : "Flow",
      "product_memberships" : [
        "Flow"
      ],
      "sources" : [
        "Bridges/CancelBag.swift",
        "Bridges/Disposable+Cancellable.swift",
        "Bridges/Future+Combine.swift",
        "Bridges/Publisher+Utilities.swift",
        "Bridges/Signal+Combine.swift",
        "Bridges/Signal+SwiftUI.swift",
        "Callbacker.swift",
        "CoreSignal.swift",
        "Delegate.swift",
        "Disposable.swift",
        "Either.swift",
        "Enablable.swift",
        "Event.swift",
        "EventType.swift",
        "FiniteSignal.swift",
        "Future+Additions.swift",
        "Future+Combiners.swift",
        "Future+Signal.swift",
        "Future.swift",
        "FutureQueue.swift",
        "HasEventListeners.swift",
        "Locking.swift",
        "OrderedCallbacker.swift",
        "ReadSignal.swift",
        "ReadWriteSignal.swift",
        "Recursive.swift",
        "Result.swift",
        "Scheduler.swift",
        "Signal+Combiners.swift",
        "Signal+Construction.swift",
        "Signal+Debug.swift",
        "Signal+KeyValueObserving.swift",
        "Signal+Listeners.swift",
        "Signal+Scheduling.swift",
        "Signal+Transforms.swift",
        "Signal+Utilities.swift",
        "Signal.swift",
        "SignalProvider.swift",
        "TargetActionable.swift",
        "UIControls+Extensions.swift",
        "UIView+EditingMenu.swift",
        "UIView+Signal.swift",
        "Utilities.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "Flow",
    "schemes" : [
      "Flow"
    ],
    "targets" : [
      "Flow",
      "FlowTests"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.2.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Flow -destination generic/platform=watchOS
Command line invocation:
    /Applications/Xcode-15.2.0.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 Flow -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
2024-09-26 07:26:43.155 xcodebuild[530:3021] Writing error result bundle to /var/folders/fs/0w3t9t1d28xc3bj0tgb8hcrw0000gn/T/ResultBundle_2024-26-09_07-26-0043.xcresult
xcodebuild: error: Unable to find a destination matching the provided destination specifier:
		{ generic:1, platform:watchOS }
	Available destinations for the "Flow" scheme:
		{ platform:macOS, arch:arm64, id:0000FE00-8C151E3703BE51BE }
		{ platform:macOS, arch:x86_64, id:0000FE00-8C151E3703BE51BE }
		{ platform:iOS, id:dvtdevice-DVTiPhonePlaceholder-iphoneos:placeholder, name:Any iOS Device }
		{ platform:iOS Simulator, id:dvtdevice-DVTiOSDeviceSimulatorPlaceholder-iphonesimulator:placeholder, name:Any iOS Simulator Device }
		{ platform:macOS, name:Any Mac }
		{ platform:tvOS, id:dvtdevice-DVTiOSDevicePlaceholder-appletvos:placeholder, name:Any tvOS Device }
		{ platform:tvOS Simulator, id:dvtdevice-DVTiOSDeviceSimulatorPlaceholder-appletvsimulator:placeholder, name:Any tvOS Simulator Device }
		{ platform:tvOS Simulator, id:21CCA1CD-81D3-4F11-8B15-10428179B115, OS:17.2, name:Apple TV }
		{ platform:tvOS Simulator, id:21CCA1CD-81D3-4F11-8B15-10428179B115, OS:17.2, name:Apple TV }
		{ platform:tvOS Simulator, id:E2475E1F-9607-4AE8-A8CB-A8759A97E06F, OS:17.2, name:Apple TV 4K (3rd generation) }
		{ platform:tvOS Simulator, id:E2475E1F-9607-4AE8-A8CB-A8759A97E06F, OS:17.2, name:Apple TV 4K (3rd generation) }
		{ platform:tvOS Simulator, id:EC67D617-2459-4996-BB03-B3341BBB056F, OS:17.2, name:Apple TV 4K (3rd generation) (at 1080p) }
		{ platform:tvOS Simulator, id:EC67D617-2459-4996-BB03-B3341BBB056F, OS:17.2, name:Apple TV 4K (3rd generation) (at 1080p) }
		{ platform:iOS Simulator, id:688802DA-4E2C-47C5-AA04-0715DB36CC6E, OS:17.2, name:iPad (10th generation) }
		{ platform:iOS Simulator, id:688802DA-4E2C-47C5-AA04-0715DB36CC6E, OS:17.2, name:iPad (10th generation) }
		{ platform:iOS Simulator, id:23F62282-4872-49E8-A139-B186B2EA10AD, OS:17.2, name:iPad Air (5th generation) }
		{ platform:iOS Simulator, id:23F62282-4872-49E8-A139-B186B2EA10AD, OS:17.2, name:iPad Air (5th generation) }
		{ platform:iOS Simulator, id:DA6F6BB7-023D-4ACA-8AD7-5159AF669747, OS:17.2, name:iPad Pro (11-inch) (4th generation) }
		{ platform:iOS Simulator, id:DA6F6BB7-023D-4ACA-8AD7-5159AF669747, OS:17.2, name:iPad Pro (11-inch) (4th generation) }
		{ platform:iOS Simulator, id:7881A73E-62D3-4CF0-88F5-808A28C29974, OS:17.2, name:iPad Pro (12.9-inch) (6th generation) }
		{ platform:iOS Simulator, id:7881A73E-62D3-4CF0-88F5-808A28C29974, OS:17.2, name:iPad Pro (12.9-inch) (6th generation) }
		{ platform:iOS Simulator, id:9A6111B2-BBD3-4C3D-8322-F7FC6AAAF8DD, OS:17.2, name:iPad mini (6th generation) }
		{ platform:iOS Simulator, id:9A6111B2-BBD3-4C3D-8322-F7FC6AAAF8DD, OS:17.2, name:iPad mini (6th generation) }
		{ platform:iOS Simulator, id:41D5B3A6-03E0-48EE-9EB1-267124489799, OS:17.2, name:iPhone 15 }
		{ platform:iOS Simulator, id:41D5B3A6-03E0-48EE-9EB1-267124489799, OS:17.2, name:iPhone 15 }
		{ platform:iOS Simulator, id:0677D0D7-BA77-40D1-BDF3-66A7B9D47D81, OS:17.2, name:iPhone 15 Plus }
		{ platform:iOS Simulator, id:0677D0D7-BA77-40D1-BDF3-66A7B9D47D81, OS:17.2, name:iPhone 15 Plus }
		{ platform:iOS Simulator, id:3D5E44BF-19B6-4D79-9376-D74C977E9DB7, OS:17.2, name:iPhone 15 Pro }
		{ platform:iOS Simulator, id:3D5E44BF-19B6-4D79-9376-D74C977E9DB7, OS:17.2, name:iPhone 15 Pro }
		{ platform:iOS Simulator, id:3EC95C9F-AD59-4FE1-A8D8-B53A7F516A36, OS:17.2, name:iPhone 15 Pro Max }
		{ platform:iOS Simulator, id:3EC95C9F-AD59-4FE1-A8D8-B53A7F516A36, OS:17.2, name:iPhone 15 Pro Max }
		{ platform:iOS Simulator, id:5C33ED6C-CC5D-49AF-9D6B-5004974693B4, OS:17.2, name:iPhone SE (3rd generation) }
		{ platform:iOS Simulator, id:5C33ED6C-CC5D-49AF-9D6B-5004974693B4, OS:17.2, name:iPhone SE (3rd generation) }
INFRASTRUCTURE ERROR (status: destinationUnavailable