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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 EventSource, reference 0.1.4 (d783b1), with Swift 5.9 for macOS (SPM) on 3 Mar 2025 20:05:38 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.2.0.app xcrun swift build --arch arm64

Build Log

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RunAll
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Builder version: 4.60.1
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/Recouse/EventSource.git
Reference: 0.1.4
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/Recouse/EventSource
 * tag               0.1.4      -> FETCH_HEAD
HEAD is now at d783b1c Add iOS 15 job to CI (#29)
Cloned https://github.com/Recouse/EventSource.git
Revision (git rev-parse @):
d783b1cf60599dbcec6396c55a6bab33a1c92dc3
SUCCESS checkout https://github.com/Recouse/EventSource.git at 0.1.4
========================================
Build
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Selected platform:         macosSpm
Swift version:             5.9
Building package at path:  $PWD
https://github.com/Recouse/EventSource.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.2.0.app xcrun swift build --arch arm64
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 5.10.0 but the installed version is 5.9.0
BUILD FAILURE 5.9 macosSpm