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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 AsyncButton with Swift 5.9 for macOS (SPM).

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: 4.38.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/edonv/AsyncButton.git
Reference: main
Initialized empty Git repository in /Users/builder/builds/TDmZkXJm/1/finestructure/swiftpackageindex-builder/spi-builder-workspace/.git/
From https://github.com/edonv/AsyncButton
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 8b21b38 Update README.md
Cloned https://github.com/edonv/AsyncButton.git
Revision (git rev-parse @):
8b21b38b6f3c372f5f5886e989a5b5bb0fba9473
SPI manifest file found: $workDir/.spi.yml
SUCCESS checkout https://github.com/edonv/AsyncButton.git at main
========================================
Build
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Selected platform:         macosSpm
Swift version:             5.9
Building package at path:  $workDir
https://github.com/edonv/AsyncButton.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.2.0.app xcrun swift build --arch arm64
Fetching https://github.com/shaps80/SwiftUIBackports.git from cache
Fetching https://github.com/shaps80/SwiftBackports from cache
Fetched https://github.com/shaps80/SwiftBackports (2.11s)
Fetched https://github.com/shaps80/SwiftUIBackports.git (2.15s)
Computing version for https://github.com/shaps80/SwiftUIBackports.git
Computed https://github.com/shaps80/SwiftUIBackports.git at 2.8.0 (0.55s)
Computing version for https://github.com/shaps80/SwiftBackports
Computed https://github.com/shaps80/SwiftBackports at 1.0.3 (0.06s)
Creating working copy for https://github.com/shaps80/SwiftUIBackports.git
Working copy of https://github.com/shaps80/SwiftUIBackports.git resolved at 2.8.0
Creating working copy for https://github.com/shaps80/SwiftBackports
Working copy of https://github.com/shaps80/SwiftBackports resolved at 1.0.3
error: the library 'AsyncButton' requires macos 10.13, but depends on the product 'SwiftUIBackports' which requires macos 10.15; consider changing the library 'AsyncButton' to require macos 10.15 or later, or the product 'SwiftUIBackports' to require macos 10.13 or earlier.
error: the library 'AsyncButton' requires macos 10.13, but depends on the product 'SwiftUIBackports' which requires macos 10.15; consider changing the library 'AsyncButton' to require macos 10.15 or later, or the product 'SwiftUIBackports' to require macos 10.13 or earlier.
BUILD FAILURE 5.9 macosSpm