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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 XcodeSelectiveTesting, reference main (f8910c), with Swift 5.9 for macOS (Xcode) using Xcode 15.2 on 1 May 2025 13:40:12 UTC.

Build Command

No build command. This typically means the build failed at an early stage where we determine the build command.

Build Log

========================================
RunAll
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Builder version: 4.61.3
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/mikeger/XcodeSelectiveTesting.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/mikeger/XcodeSelectiveTesting
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at f8910c2 Update README.md
Cloned https://github.com/mikeger/XcodeSelectiveTesting.git
Revision (git rev-parse @):
f8910c228108773330a267f8852ce13e6f2ccc0a
SUCCESS checkout https://github.com/mikeger/XcodeSelectiveTesting.git at main
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             5.9
Building package at path:  $PWD
https://github.com/mikeger/XcodeSelectiveTesting.git
Command line invocation:
    /Applications/Xcode-15.2.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
Fetching from https://github.com/jpsim/Yams.git
Fetching from https://github.com/onevcat/Rainbow
Fetching from https://github.com/kylef/PathKit.git
Fetching from https://github.com/apple/swift-argument-parser.git
Fetching from https://github.com/tuist/XcodeProj.git
Fetching from https://github.com/kylef/Spectre.git
Resolve Package Graph
Updating from https://github.com/kylef/PathKit.git
Updating from https://github.com/onevcat/Rainbow
Updating from https://github.com/jpsim/Yams.git
Updating from https://github.com/apple/swift-argument-parser.git
Updating from https://github.com/tuist/XcodeProj.git
Updating from https://github.com/kylef/Spectre.git
Resolve Package Graph
Updating from https://github.com/onevcat/Rainbow
Updating from https://github.com/kylef/PathKit.git
Updating from https://github.com/jpsim/Yams.git
Updating from https://github.com/apple/swift-argument-parser.git
Updating from https://github.com/tuist/XcodeProj.git
Updating from https://github.com/kylef/Spectre.git
Resolve Package Graph
Updating from https://github.com/jpsim/Yams.git
Updating from https://github.com/kylef/PathKit.git
Updating from https://github.com/onevcat/Rainbow
Updating from https://github.com/apple/swift-argument-parser.git
Updating from https://github.com/tuist/XcodeProj.git
Updating from https://github.com/kylef/Spectre.git
Resolved source packages:
  XcodeSelectiveTesting: /Users/admin/builder/spi-builder-workspace
2025-05-01 09:40:08.248 xcodebuild[456:2492] Writing error result bundle to /var/folders/fs/0w3t9t1d28xc3bj0tgb8hcrw0000gn/T/ResultBundle_2025-01-05_09-40-0008.xcresult
xcodebuild: error: Could not resolve package dependencies:
  Dependencies could not be resolved because 'xcodeproj' >= 8.24.12 contains incompatible tools version (6.0.0) and root depends on 'xcodeproj' 9.0.2..<10.0.0.
Command line invocation:
    /Applications/Xcode-15.2.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
Updating from https://github.com/onevcat/Rainbow
Updating from https://github.com/jpsim/Yams.git
Updating from https://github.com/kylef/PathKit.git
Updating from https://github.com/apple/swift-argument-parser.git
Updating from https://github.com/tuist/XcodeProj.git
Updating from https://github.com/kylef/Spectre.git
Resolved source packages:
  XcodeSelectiveTesting: /Users/admin/builder/spi-builder-workspace
2025-05-01 09:40:11.806 xcodebuild[901:4327] Writing error result bundle to /var/folders/fs/0w3t9t1d28xc3bj0tgb8hcrw0000gn/T/ResultBundle_2025-01-05_09-40-0011.xcresult
xcodebuild: error: Could not resolve package dependencies:
  Dependencies could not be resolved because 'xcodeproj' >= 8.24.12 contains incompatible tools version (6.0.0) and root depends on 'xcodeproj' 9.0.2..<10.0.0.
BUILD FAILURE 5.9 macosXcodebuild