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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 SourceMapper, reference main (8fb4bd), with Swift 5.10 for macOS (SPM) on 29 Apr 2025 15:30:40 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: 4.61.1
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/johnfairh/SourceMapper.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/johnfairh/SourceMapper
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 8fb4bd6 Move CI to Swift 6.1 (#8)
Cloned https://github.com/johnfairh/SourceMapper.git
Revision (git rev-parse @):
8fb4bd6d9eeb064a77642d61b75d396127b71741
SUCCESS checkout https://github.com/johnfairh/SourceMapper.git at main
========================================
Build
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Selected platform:         macosSpm
Swift version:             5.10
Building package at path:  $PWD
https://github.com/johnfairh/SourceMapper.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