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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 CocoaLumberjack with Swift 5.10 for macOS (SPM).

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.3.0-Beta.2.app xcrun swift build --arch arm64

Build Log

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RunAll
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Builder version: 4.29.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/beMappy/CocoaLumberjack.git
Reference: v3.7.5
Initialized empty Git repository in /Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.git/
From https://github.com/beMappy/CocoaLumberjack
 * tag               v3.7.5     -> FETCH_HEAD
HEAD is now at 0a09f74 Added SPM support
Cloned https://github.com/beMappy/CocoaLumberjack.git
Revision (git rev-parse @):
0a09f74e4bd34dd2f0d59ab6b64bc50c20d8de8b
SUCCESS checkout https://github.com/beMappy/CocoaLumberjack.git at v3.7.5
========================================
Build
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Selected platform:         macosSpm
Swift version:             5.10
Building package at path:  $workDir
https://github.com/beMappy/CocoaLumberjack.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.3.0-Beta.2.app xcrun swift build --arch arm64
error: The package does not contain a buildable target.
Add at least one `.target` or `.executableTarget` to your `Package.swift`.
error: The package does not contain a buildable target.
Add at least one `.target` or `.executableTarget` to your `Package.swift`.
BUILD FAILURE 5.10 macosSpm