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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 Cairo with Swift 5.10 for macOS (SPM).

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.3.0-Beta.2.app xcrun swift build --arch arm64

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/pureswift/cairo.git
Reference: 1.2.3
Initialized empty Git repository in /Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.git/
From https://github.com/pureswift/cairo
 * tag               1.2.3      -> FETCH_HEAD
HEAD is now at bc207ab Fixed for Swift 3.0.2 compatibility
Cloned https://github.com/pureswift/cairo.git
Revision (git rev-parse @):
bc207ab2e367fbafef51a47b85a7e1eb2821ce57
SUCCESS checkout https://github.com/pureswift/cairo.git at 1.2.3
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Build
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Selected platform:         macosSpm
Swift version:             5.10
Building package at path:  $workDir
https://github.com/pureswift/cairo.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.3.0-Beta.2.app xcrun swift build --arch arm64
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 3.0.2 which is no longer supported; consider using '// swift-tools-version: 5.10' to specify the current tools version
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 3.0.2 which is no longer supported; consider using '// swift-tools-version: 5.10' to specify the current tools version
BUILD FAILURE 5.10 macosSpm