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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 Swift Unidoc, reference 0.21.0 (a41bb5), with Swift 5.9 for macOS (SPM) on 19 Jan 2025 03:12:40 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: 4.60.1
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/tayloraswift/swift-unidoc.git
Reference: 0.21.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/tayloraswift/swift-unidoc
 * tag               0.21.0     -> FETCH_HEAD
HEAD is now at a41bb56 update all the version numbers
Cloned https://github.com/tayloraswift/swift-unidoc.git
Revision (git rev-parse @):
a41bb56d05216e2777dc27595c85db77383fc3ad
SUCCESS checkout https://github.com/tayloraswift/swift-unidoc.git at 0.21.0
========================================
Build
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Selected platform:         macosSpm
Swift version:             5.9
Building package at path:  $PWD
https://github.com/tayloraswift/swift-unidoc.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