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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 Prefire, reference 4.1.0 (a83c9f), with Swift 5.9 for macOS (SPM) on 2 May 2025 15:02:08 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: 4.61.3
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/BarredEwe/Prefire.git
Reference: 4.1.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/BarredEwe/Prefire
 * tag               4.1.0      -> FETCH_HEAD
HEAD is now at a83c9f6 Fixed indents in yaml for Playbook
Cloned https://github.com/BarredEwe/Prefire.git
Revision (git rev-parse @):
a83c9f6074f4d5a5ec194babb26d1e1e30288f6a
SUCCESS checkout https://github.com/BarredEwe/Prefire.git at 4.1.0
========================================
Build
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Selected platform:         macosSpm
Swift version:             5.9
Building package at path:  $PWD
https://github.com/BarredEwe/Prefire.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 6.0.0 but the installed version is 5.9.0
BUILD FAILURE 5.9 macosSpm