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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-synchronization, reference 0.1.0 (c22420), with Swift 5.10 for macOS (SPM) on 24 Apr 2025 11:20:42 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.4.0.app xcrun swift build --arch arm64

Build Log

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RunAll
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Builder version: 4.61.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/fetch-rewards/swift-synchronization.git
Reference: 0.1.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/fetch-rewards/swift-synchronization
 * tag               0.1.0      -> FETCH_HEAD
HEAD is now at c22420f Add swift-syntax version comment to Package manifest (#27)
Cloned https://github.com/fetch-rewards/swift-synchronization.git
Revision (git rev-parse @):
c22420fb83dae2fbf01700c309eaa60563d286e0
SUCCESS checkout https://github.com/fetch-rewards/swift-synchronization.git at 0.1.0
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Build
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Selected platform:         macosSpm
Swift version:             5.10
Building package at path:  $PWD
https://github.com/fetch-rewards/swift-synchronization.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.4.0.app xcrun swift build --arch arm64
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 6.0.0 but the installed version is 5.10.0
BUILD FAILURE 5.10 macosSpm