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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 MirrorDiffKit with Swift 5.8 for macOS (SPM).

Build Command

env DEVELOPER_DIR=/Applications/Xcode-14.3.1.app xcrun swift build --arch arm64

Build Log

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RunAll
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Builder version: 4.41.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/Kuniwak/MirrorDiffKit.git
Reference: 6.0.0
Initialized empty Git repository in /Users/builder/builds/o86TiJKT/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.git/
From https://github.com/Kuniwak/MirrorDiffKit
 * tag               6.0.0      -> FETCH_HEAD
HEAD is now at 6d721f8 Merge pull request #51 from Kuniwak/only-spm
Submodule path 'Scripts/xcodebuild-scripts': checked out '253e8c60a48de1668d53f19f235a3a44e91f6380'
Submodule 'Scripts/xcodebuild-scripts' (https://github.com/Kuniwak/xcodebuild-scripts) registered for path 'Scripts/xcodebuild-scripts'
Cloning into '/Users/builder/builds/o86TiJKT/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/Scripts/xcodebuild-scripts'...
Cloned https://github.com/Kuniwak/MirrorDiffKit.git
Revision (git rev-parse @):
6d721f86bbc91621b382f5a6a5a2ebd135c256e5
SUCCESS checkout https://github.com/Kuniwak/MirrorDiffKit.git at 6.0.0
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Build
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Selected platform:         macosSpm
Swift version:             5.8
Building package at path:  $workDir
https://github.com/Kuniwak/MirrorDiffKit.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-14.3.1.app xcrun swift build --arch arm64
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 5.9.0 but the installed version is 5.8.1
BUILD FAILURE 5.8 macosSpm