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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 Either, reference production (6a8017), with Swift 5.9 for macOS (SPM) on 27 Apr 2025 01:44:25 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: 4.61.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/RougeWare/Swift-Either.git
Reference: production
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/RougeWare/Swift-Either
 * branch            production -> FETCH_HEAD
 * [new branch]      production -> origin/production
HEAD is now at 6a80178 Merge branch 'feature/Sendable' into production
Cloned https://github.com/RougeWare/Swift-Either.git
Revision (git rev-parse @):
6a8017853da369892b08ec6f89dbe28cf3e92001
SUCCESS checkout https://github.com/RougeWare/Swift-Either.git at production
========================================
Build
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Selected platform:         macosSpm
Swift version:             5.9
Building package at path:  $PWD
https://github.com/RougeWare/Swift-Either.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