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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 SquirrelConfig with Swift 5.10 for iOS 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/swift-squirrel/squirrelconfig.git
Reference: master
Initialized empty Git repository in /Users/admin/builds/J1XnyXFH/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/.git/
From https://github.com/swift-squirrel/squirrelconfig
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at ce47f7e remove observer
Cloned https://github.com/swift-squirrel/squirrelconfig.git
Revision (git rev-parse @):
ce47f7e0637be352ff89d36d7cd996ac7e42502e
SUCCESS checkout https://github.com/swift-squirrel/squirrelconfig.git at master
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Build
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Selected platform:         iOS
Swift version:             5.10
Building package at path:  $workDir
https://github.com/swift-squirrel/squirrelconfig.git
Command line invocation:
    /Applications/Xcode-15.3.0-Beta.2.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builds/J1XnyXFH/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builds/J1XnyXFH/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/.dependencies
    IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
Fetching from https://github.com/jpsim/Yams.git (cached)
Fetching from https://github.com/Swift-Squirrel/Squirrel-Core.git (cached)
Fetching from https://github.com/kylef/PathKit.git (cached)
Fetching from https://github.com/sharplet/Regex.git (cached)
Resolved source packages:
  SquirrelConfig: /Users/admin/builds/J1XnyXFH/1/finestructure/swiftpackageindex-builder/spi-builder-workspace
Resolve Package Graph
Updating from https://github.com/kylef/PathKit.git
Updating from https://github.com/Swift-Squirrel/Squirrel-Core.git
Updating from https://github.com/jpsim/Yams.git
/Users/admin/builds/J1XnyXFH/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/.dependencies/repositories/Regex-8914ffd2 is not valid git repository for 'https://github.com/sharplet/Regex.git', will fetch again.Fetching from https://github.com/sharplet/Regex.git (cached)
2024-02-14 11:06:21.689 xcodebuild[61344:7396855] 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
2024-02-14 11:06:22.510 xcodebuild[61344:7396855] Writing error result bundle to /var/folders/c2/b2kmn__12wq57m82ltz0hl1w0000gn/T/ResultBundle_2024-14-02_11-06-0022.xcresult
2024-02-14 11:06:22.609 xcodebuild[61344:7396855] [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.
xcodebuild: error: Could not resolve package dependencies:
  Dependencies could not be resolved because root depends on 'squirrel-core' 0.1.2..<1.0.0.
'squirrel-core' >= 0.1.2 cannot be used.
'regex' < 2.0.0 cannot be used because no versions of 'regex' match the requirement 1.1.2..<2.0.0 and 'regex' < 1.1.2 contains incompatible tools version (3.1.0).
'squirrel-core' >= 0.1.2 practically depends on 'regex' 1.1.0..<2.0.0 because 'squirrel-core' 0.1.2 depends on 'regex' 1.1.0..<2.0.0 and 'squirrel-core' 0.1.3 depends on 'regex' 1.1.0..<2.0.0.
'squirrel-core' {0.1.2, 0.1.4..<1.0.0} practically depends on 'regex' 1.1.0..<2.0.0 because no versions of 'squirrel-core' match the requirement 0.1.4..<1.0.0 and 'squirrel-core' 0.1.2 depends on 'regex' 1.1.0..<2.0.0.
GENERIC FAILURE 5.10 iOS