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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-sass 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: 4.55.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/johnfairh/swift-sass.git
Reference: 3.0.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/johnfairh/swift-sass
 * tag               3.0.0      -> FETCH_HEAD
HEAD is now at 077ecab Version 3.0.0
Submodule path 'sass': checked out '0150d3861d89f31ee939cfcbf331f24bae3395e4'
Submodule 'sass' (https://github.com/sass/sass.git) registered for path 'sass'
Cloning into '/Users/admin/builder/spi-builder-workspace/sass'...
Cloned https://github.com/johnfairh/swift-sass.git
Revision (git rev-parse @):
077ecabe777d24d254240aeef7a4d7b236157f22
SUCCESS checkout https://github.com/johnfairh/swift-sass.git at 3.0.0
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Build
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Selected platform:         iOS
Swift version:             5.10
Building package at path:  $PWD
https://github.com/johnfairh/swift-sass.git
Command line invocation:
    /Applications/Xcode-15.4.0.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/apple/swift-nio.git
Fetching from https://github.com/apple/swift-collections.git
Fetching from https://github.com/johnfairh/Semver.swift.git
Fetching from https://github.com/johnfairh/SourceMapper.git
Fetching from https://github.com/apple/swift-system.git
Fetching from https://github.com/apple/swift-atomics.git
Fetching from https://github.com/apple/swift-log.git
Fetching from https://github.com/apple/swift-protobuf.git
Creating working copy of package ‘SourceMapper’
Checking out 2.0.0 of package ‘SourceMapper’
Creating working copy of package ‘swift-collections’
Checking out 1.1.4 of package ‘swift-collections’
Creating working copy of package ‘swift-system’
Checking out 1.3.2 of package ‘swift-system’
Creating working copy of package ‘swift-log’
Checking out 1.6.1 of package ‘swift-log’
Creating working copy of package ‘swift-atomics’
Checking out 1.2.0 of package ‘swift-atomics’
Creating working copy of package ‘swift-nio’
Checking out 2.74.0 of package ‘swift-nio’
Creating working copy of package ‘swift’
Checking out 1.2.4 of package ‘swift’
Creating working copy of package ‘swift-protobuf’
Checking out 1.28.2 of package ‘swift-protobuf’
Resolved source packages:
  SwiftProtobuf: https://github.com/apple/swift-protobuf.git @ 1.28.2
  swift-system: https://github.com/apple/swift-system.git @ 1.3.2
  Semver: https://github.com/johnfairh/Semver.swift.git @ 1.2.4
  swift-collections: https://github.com/apple/swift-collections.git @ 1.1.4
  swift-atomics: https://github.com/apple/swift-atomics.git @ 1.2.0
  swift-nio: https://github.com/apple/swift-nio.git @ 2.74.0
  swift-log: https://github.com/apple/swift-log.git @ 1.6.1
  SourceMapper: https://github.com/johnfairh/SourceMapper.git @ 2.0.0
resolved source packages: SwiftProtobuf, swift-system, Semver, swift-collections, swift-atomics, swift-nio, swift-log, SourceMapper
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 6.0.0 but the installed version is 5.10.0
error: fatalError
GENERIC FAILURE 5.10 iOS