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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 leaf-kit, reference 1.13.1 (cf186d), with Swift 5.9 for macOS (SPM) on 17 Apr 2025 23:35:35 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/vapor/leaf-kit.git
Reference: 1.13.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/vapor/leaf-kit
 * tag               1.13.1     -> FETCH_HEAD
HEAD is now at cf186d8 Fix comparisons between non-`nil` values and `nil` (#138)
Cloned https://github.com/vapor/leaf-kit.git
Revision (git rev-parse @):
cf186d8f2ef33e16fd1dd78df36466c22c2e632f
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/vapor/leaf-kit.git at 1.13.1
========================================
Build
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Selected platform:         macosSpm
Swift version:             5.9
Building package at path:  $PWD
https://github.com/vapor/leaf-kit.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 5.10.0 but the installed version is 5.9.0
BUILD FAILURE 5.9 macosSpm