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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 PresenterKit with Swift 6.1 for visionOS using Xcode 16.3.

Build Command

Build command unavailable

Build Log

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RunAll
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Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
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Clone URL: https://github.com/jessesquires/PresenterKit.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/jessesquires/PresenterKit
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 77d4e2c [6.1.3] deprecated
Cloned https://github.com/jessesquires/PresenterKit.git
Revision (git rev-parse @):
77d4e2cb6b123f7baf4e27f6e0c8ff2cb6b2b884
SUCCESS checkout https://github.com/jessesquires/PresenterKit.git at main
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Build
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Selected platform:         visionOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/jessesquires/PresenterKit.git
https://github.com/jessesquires/PresenterKit.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "PresenterKit",
  "name" : "PresenterKit",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "11.0"
    }
  ],
  "products" : [
    {
      "name" : "PresenterKit",
      "targets" : [
        "PresenterKit"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "PresenterKitTests",
      "module_type" : "SwiftTarget",
      "name" : "PresenterKitTests",
      "path" : "Tests",
      "sources" : [
        "PresenterKitTests.swift"
      ],
      "target_dependencies" : [
        "PresenterKit"
      ],
      "type" : "test"
    },
    {
      "c99name" : "PresenterKit",
      "module_type" : "SwiftTarget",
      "name" : "PresenterKit",
      "path" : "Sources",
      "product_memberships" : [
        "PresenterKit"
      ],
      "sources" : [
        "DismissButtonConfig.swift",
        "HalfModalPresentationController.swift",
        "PresentationType.swift",
        "UINavigationController+Extensions.swift",
        "UIViewController+Extensions.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" : "PresenterKit",
  "name" : "PresenterKit",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "11.0"
    }
  ],
  "products" : [
    {
      "name" : "PresenterKit",
      "targets" : [
        "PresenterKit"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "PresenterKitTests",
      "module_type" : "SwiftTarget",
      "name" : "PresenterKitTests",
      "path" : "Tests",
      "sources" : [
        "PresenterKitTests.swift"
      ],
      "target_dependencies" : [
        "PresenterKit"
      ],
      "type" : "test"
    },
    {
      "c99name" : "PresenterKit",
      "module_type" : "SwiftTarget",
      "name" : "PresenterKit",
      "path" : "Sources",
      "product_memberships" : [
        "PresenterKit"
      ],
      "sources" : [
        "DismissButtonConfig.swift",
        "HalfModalPresentationController.swift",
        "PresentationType.swift",
        "UINavigationController+Extensions.swift",
        "UIViewController+Extensions.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "PresenterKit",
    "schemes" : [
      "PresenterKit"
    ],
    "targets" : [
      "PresenterKit",
      "PresenterKitTests"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme PresenterKit -destination generic/platform=xrOS 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 PresenterKit -destination generic/platform=xrOS "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
2025-04-26 09:58:20.860 xcodebuild[571:3231] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2025-26-04_09-58-0020.xcresult
xcodebuild: error: Unable to find a destination matching the provided destination specifier:
		{ generic:1, platform:xrOS }
	Available destinations for the "PresenterKit" scheme:
		{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:25db2f9f3c00b5bd8fa9631a3d741414cdc06b4c, 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 }
INFRASTRUCTURE ERROR (status: destinationUnavailable