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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 JavaScriptKit, reference 0.28.0 (d78637), with Swift 5.10 for macOS (SPM) on 25 Apr 2025 19:59:44 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/swiftwasm/JavaScriptKit.git
Reference: 0.28.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/swiftwasm/JavaScriptKit
 * tag               0.28.0     -> FETCH_HEAD
HEAD is now at d786374 Merge pull request #349 from swiftwasm/yt/capture-error-message
Cloned https://github.com/swiftwasm/JavaScriptKit.git
Revision (git rev-parse @):
d786374a3e24ca05f3c00f0a0fbdcc60e85f8626
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/swiftwasm/JavaScriptKit.git at 0.28.0
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             5.10
Building package at path:  $PWD
https://github.com/swiftwasm/JavaScriptKit.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