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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 icu-swift with Swift 6.0 for macOS (SPM).

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.40.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/allevato/icu-swift.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/allevato/icu-swift
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at e66774c Update changelog for 0.2.0
Cloned https://github.com/allevato/icu-swift.git
Revision (git rev-parse @):
e66774c1f0d10f12d3961c7a8a9f2f52ba58781a
SUCCESS checkout https://github.com/allevato/icu-swift.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $workDir
https://github.com/allevato/icu-swift.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete
Fetching https://github.com/allevato/icu4c-swift
[2/19] Fetching icu4c-swift
Fetched https://github.com/allevato/icu4c-swift from cache (0.65s)
Computing version for https://github.com/allevato/icu4c-swift
error: the Swift tools version specification's label 'Copyright' is misspelt; consider replacing it with 'swift-tools-version:'
BUILD FAILURE 6.0 macosSpm
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.