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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 Redline, reference v0.0.1 (3da505), with Swift 5.10 for macOS (SPM) on 29 Apr 2025 22:35:05 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/robb/Redline.git
Reference: v0.0.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/robb/Redline
 * tag               v0.0.1     -> FETCH_HEAD
HEAD is now at 3da505c Initial commit
Cloned https://github.com/robb/Redline.git
Revision (git rev-parse @):
3da505c314d7316cc22e78eeda970b0c7f318b87
SUCCESS checkout https://github.com/robb/Redline.git at v0.0.1
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             5.10
Building package at path:  $PWD
https://github.com/robb/Redline.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