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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 Jot, reference main (082678), with Swift 5.10 for macOS (SPM) on 18 Apr 2025 17:03:52 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.4.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
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Builder version: 4.60.1
Interrupt handler set up.
========================================
Checkout
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Clone URL: https://github.com/mattmassicotte/Jot.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/mattmassicotte/Jot
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 0826782 spi.yml for docc
Cloned https://github.com/mattmassicotte/Jot.git
Revision (git rev-parse @):
0826782b0489dc76249b5def7d69f38684e5cb7f
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/mattmassicotte/Jot.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             5.10
Building package at path:  $PWD
https://github.com/mattmassicotte/Jot.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