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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 swift-conformable-existential with Swift 5.9 for iOS using Xcode 15.2.

Build Command

Build command unavailable

Build Log

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RunAll
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Builder version: 4.34.1
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/stansmida/swift-conformable-existential.git
Reference: 0.4.0
Initialized empty Git repository in /Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.git/
From https://github.com/stansmida/swift-conformable-existential
 * tag               0.4.0      -> FETCH_HEAD
HEAD is now at 06a14a9 Refactor collection wrappers.
Cloned https://github.com/stansmida/swift-conformable-existential.git
Revision (git rev-parse @):
06a14a93a48e8fc8f2f287ee28b91245df753a92
SPI manifest file found: $workDir/.spi.yml
SUCCESS checkout https://github.com/stansmida/swift-conformable-existential.git at 0.4.0
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Build
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Selected platform:         iOS
Swift version:             5.9
Building package at path:  $workDir
https://github.com/stansmida/swift-conformable-existential.git
Command line invocation:
    /Applications/Xcode-15.2.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.dependencies
    IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
package 'spi-builder-workspace' is using Swift tools version 5.10.0 but the installed version is 5.9.0
Resolved source packages:
  spi-builder-workspace: /Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace
Resolve Package Graph
package 'spi-builder-workspace' is using Swift tools version 5.10.0 but the installed version is 5.9.0
Resolve Package Graph
package 'spi-builder-workspace' is using Swift tools version 5.10.0 but the installed version is 5.9.0
objc[81618]: Class XROS1_1SimRuntime is implemented in both /Library/Developer/CoreSimulator/Volumes/xrOS_21O209/Library/Developer/CoreSimulator/Profiles/Runtimes/xrOS 1.1.simruntime/Contents/MacOS/xrOS 1.1 (0x10d76c0e0) and /Library/Developer/CoreSimulator/Volumes/xrOS_21O5181e/Library/Developer/CoreSimulator/Profiles/Runtimes/xrOS 1.1.simruntime/Contents/MacOS/xrOS 1.1 (0x10d95c0e0). One of the two will be used. Which one is undefined.
2024-04-04 21:13:08.621 xcodebuild[81618:9456629] Writing error result bundle to /var/folders/b3/8p5yvk0d16s637btgmtl295m0000gp/T/ResultBundle_2024-04-04_21-13-0008.xcresult
2024-04-04 21:13:09.393 xcodebuild[81618:9456629] [MT] DVTAssertions: Warning in IDEFrameworks/IDEFoundation/Execution/RunContextManager/IDERunContextManager.m:848
Details:  Error deleting scheme: Cannot modify data because the process disallows saving.
Object:   <IDERunContextManager: 0x600002e51680>
Method:   -deleteRunContexts:completionQueue:completionBlock:
Thread:   <_NSMainThread: 0x600000964200>{number = 1, name = main}
Please file a bug at https://feedbackassistant.apple.com with this warning message and any useful information you can provide.
2024-04-04 21:13:09.395 xcodebuild[81618:9456629] 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:
  package 'spi-builder-workspace' is using Swift tools version 5.10.0 but the installed version is 5.9.0
GENERIC FAILURE 5.9 iOS