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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 SVGPath with Swift 6.1 for watchOS using Xcode 16.3.

Build Command

Build command unavailable

Build Log

========================================
RunAll
========================================
Builder version: 4.61.2
Interrupt handler set up.
========================================
Checkout
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Clone URL: https://github.com/nicklockwood/SVGPath.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/nicklockwood/SVGPath
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at dc4a664 Update for 1.1.6 release
Cloned https://github.com/nicklockwood/SVGPath.git
Revision (git rev-parse @):
dc4a664036221812d07b5216372ce61d331f890a
SUCCESS checkout https://github.com/nicklockwood/SVGPath.git at main
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Build
========================================
Selected platform:         watchOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/nicklockwood/SVGPath.git
https://github.com/nicklockwood/SVGPath.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "SVGPath",
  "name" : "SVGPath",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SVGPath",
      "targets" : [
        "SVGPath"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SVGPathTests",
      "module_type" : "SwiftTarget",
      "name" : "SVGPathTests",
      "path" : "Tests",
      "sources" : [
        "CGPathTests.swift",
        "MetadataTests.swift",
        "SVGPathTests.swift"
      ],
      "target_dependencies" : [
        "SVGPath"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SVGPath",
      "module_type" : "SwiftTarget",
      "name" : "SVGPath",
      "path" : "Sources",
      "product_memberships" : [
        "SVGPath"
      ],
      "sources" : [
        "SVGPath+CoreGraphics.swift",
        "SVGPath.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" : "SVGPath",
  "name" : "SVGPath",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SVGPath",
      "targets" : [
        "SVGPath"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SVGPathTests",
      "module_type" : "SwiftTarget",
      "name" : "SVGPathTests",
      "path" : "Tests",
      "sources" : [
        "CGPathTests.swift",
        "MetadataTests.swift",
        "SVGPathTests.swift"
      ],
      "target_dependencies" : [
        "SVGPath"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SVGPath",
      "module_type" : "SwiftTarget",
      "name" : "SVGPath",
      "path" : "Sources",
      "product_memberships" : [
        "SVGPath"
      ],
      "sources" : [
        "SVGPath+CoreGraphics.swift",
        "SVGPath.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "SVGPath",
    "schemes" : [
      "SVGPath"
    ],
    "targets" : [
      "SVGPath",
      "SVGPathTests"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme SVGPath -destination generic/platform=watchOS 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 SVGPath -destination generic/platform=watchOS "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
2025-04-30 23:34:41.748 xcodebuild[575:3254] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2025-30-04_23-34-0041.xcresult
xcodebuild: error: Unable to find a destination matching the provided destination specifier:
		{ generic:1, platform:watchOS }
	Available destinations for the "SVGPath" scheme:
		{ platform:macOS, arch:arm64, id:c85055e43e77d7a1cb3829ff3b46415be6bee021, name:My Mac }
		{ platform:macOS, arch:x86_64, id:c85055e43e77d7a1cb3829ff3b46415be6bee021, name:My Mac }
		{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:c85055e43e77d7a1cb3829ff3b46415be6bee021, name:My Mac }
		{ platform:macOS, arch:x86_64, variant:Mac Catalyst, id:c85055e43e77d7a1cb3829ff3b46415be6bee021, name:My Mac }
		{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:c85055e43e77d7a1cb3829ff3b46415be6bee021, name:My Mac }
		{ 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:macOS, variant:Mac Catalyst, 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:visionOS, id:dvtdevice-DVTiOSDevicePlaceholder-xros:placeholder, name:Any visionOS Device }
		{ platform:visionOS Simulator, id:dvtdevice-DVTiOSDeviceSimulatorPlaceholder-xrsimulator:placeholder, name:Any visionOS Simulator Device }
INFRASTRUCTURE ERROR (status: destinationUnavailable