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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 Lotsawa, reference main (28d7a2), with Swift 5.9 for macOS (SPM) on 22 Jan 2025 11:28:18 UTC.

Build Command

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

Build Log

========================================
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/hylo-lang/Lotsawa.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/hylo-lang/Lotsawa
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 28d7a22 typo
Submodule path 'paper': checked out '73b347b7e6405323a086a17ad26f5d7b85bb43dc'
Submodule 'paper' (https://github.com/jeffreykegler/Marpa-arxiv-paper) registered for path 'paper'
Cloning into '/Users/admin/builder/spi-builder-workspace/paper'...
Cloned https://github.com/hylo-lang/Lotsawa.git
Revision (git rev-parse @):
28d7a224ed19d03f4d819fecf895e6af21fc9368
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/hylo-lang/Lotsawa.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             5.9
Building package at path:  $PWD
https://github.com/hylo-lang/Lotsawa.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