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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 MLQuestionCheck with Swift 5.10 for macOS (Xcode) using Xcode 15.4.

Build Command

Build command unavailable

Build Log

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RunAll
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Builder version: 4.29.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/micheltlutz/MLQuestionCheck.git
Reference: v1.1.3
Initialized empty Git repository in /Users/admin/builds/J1XnyXFH/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/.git/
From https://github.com/micheltlutz/MLQuestionCheck
 * tag               v1.1.3     -> FETCH_HEAD
HEAD is now at 56a12b9 Merge pull request #9 from micheltlutz/dependabot/bundler/ffi-1.11.1
Cloned https://github.com/micheltlutz/MLQuestionCheck.git
Revision (git rev-parse @):
56a12b9494815d0d4eb7344b6e84931e343065ca
SUCCESS checkout https://github.com/micheltlutz/MLQuestionCheck.git at v1.1.3
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Build
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Selected platform:         macosXcodebuild
Swift version:             5.10
Building package at path:  $workDir
https://github.com/micheltlutz/MLQuestionCheck.git
Command line invocation:
    /Applications/Xcode-15.3.0-Beta.2.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builds/J1XnyXFH/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builds/J1XnyXFH/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/.dependencies
    IDEPackageSupportUseBuiltinSCM = YES
resolved source packages:
2024-02-15 08:22:35.593 xcodebuild[23316:15175310] Requested but did not find extension point with identifier Xcode.DVTDeviceFoundation.Aspect for extension Xcode.IDEiOSSupportCore.Aspect.NBDD of plug-in com.apple.dt.IDE.IDEiOSSupportCore
2024-02-15 08:22:36.075 xcodebuild[23316:15175310] [MT] DVTPlugInQuery: Requested but did not find extension point with identifier 'Xcode.DVTDeviceFoundation.CompatibleDeviceFamilyPair'. This is programmer error; code should only request extension points that are defined by itself or its dependencies.
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "MLQuestionCheck",
    "schemes" : [
      "MLQuestionCheck-iOS",
      "MLQuestionCheck-tvOS",
      "MLQuestionCheckDemo"
    ],
    "targets" : [
      "MLQuestionCheck-iOS",
      "MLQuestionCheckTests-iOS",
      "MLQuestionCheck-tvOS",
      "MLQuestionCheckTests-tvOS",
      "MLQuestionCheckDemo",
      "MLQuestionCheckDemoTests",
      "MLQuestionCheckDemoUITests"
    ]
  }
}
2024-02-15 08:22:36.575 xcodebuild[23369:15175497] Requested but did not find extension point with identifier Xcode.DVTDeviceFoundation.Aspect for extension Xcode.IDEiOSSupportCore.Aspect.NBDD of plug-in com.apple.dt.IDE.IDEiOSSupportCore
2024-02-15 08:22:36.987 xcodebuild[23369:15175497] [MT] DVTPlugInQuery: Requested but did not find extension point with identifier 'Xcode.DVTDeviceFoundation.CompatibleDeviceFamilyPair'. This is programmer error; code should only request extension points that are defined by itself or its dependencies.
2024-02-15 08:22:37.434 xcodebuild[23451:15175732] Requested but did not find extension point with identifier Xcode.DVTDeviceFoundation.Aspect for extension Xcode.IDEiOSSupportCore.Aspect.NBDD of plug-in com.apple.dt.IDE.IDEiOSSupportCore
2024-02-15 08:22:38.550 xcodebuild[23451:15175732] Writing error result bundle to /var/folders/c2/b2kmn__12wq57m82ltz0hl1w0000gn/T/ResultBundle_2024-15-02_08-22-0038.xcresult
2024-02-15 08:22:38.653 xcodebuild[23451:15175732] [MT] DVTPlugInQuery: Requested but did not find extension point with identifier 'Xcode.DVTDeviceFoundation.CompatibleDeviceFamilyPair'. This is programmer error; code should only request extension points that are defined by itself or its dependencies.
2024-02-15 08:22:38.944 xcodebuild[23451:15175732] [MT] DVTAssertions: Warning in IDEFrameworks/IDEFoundation/Execution/RunContextManager/IDERunContextManager.m:857
Details:  Error deleting scheme: Cannot modify data because the process disallows saving.
Object:   <IDERunContextManager: 0x600001e903c0>
Method:   -deleteRunContexts:completionQueue:completionBlock:
Thread:   <_NSMainThread: 0x600003a94180>{number = 1, name = main}
Please file a bug at https://feedbackassistant.apple.com with this warning message and any useful information you can provide.
2024-02-15 08:22:38.947 xcodebuild[23451:15175732] could not delete old scheme: Error Domain=DVTCustomDataStoringErrors Code=0 "Cannot modify data because the process disallows saving." UserInfo={NSLocalizedDescription=Cannot modify data because the process disallows saving.}
xcodebuild: error: Could not resolve package dependencies:
  product 'UIKit' required by package 'spi-builder-workspace' target 'MLQuestionCheck' not found.
GENERIC FAILURE 5.10 macosXcodebuild