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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 SwiftBacktrace 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

========================================
RunAll
========================================
Builder version: 4.29.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/norio-nomura/swiftbacktrace.git
Reference: master
Initialized empty Git repository in /Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/.git/
From https://github.com/norio-nomura/swiftbacktrace
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 2a865d3 [GitHub Actions] Update action-swiftlint to 3.0.1
Cloned https://github.com/norio-nomura/swiftbacktrace.git
Revision (git rev-parse @):
2a865d3d54cd36e637badc7a788133b8ddfc9b58
SUCCESS checkout https://github.com/norio-nomura/swiftbacktrace.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             5.10
Building package at path:  $workDir
https://github.com/norio-nomura/swiftbacktrace.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.3.0-Beta.2.app xcrun swift build --arch arm64
Building for debugging...
[0/7] Write sources
In file included from /Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Clibunwind/Clibunwind.cpp:1:
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Clibunwind/include/Clibunwind.h:33:3: error: "Unsupported arch"
# error "Unsupported arch"
  ^
1 error generated.
[2/7] Compiling Clibunwind Clibunwind.cpp
[2/7] Compiling c-atomics.c
[2/7] Compiling CSwiftBacktrace CSwiftBacktrace.cpp
[2/7] Compiling c-nioatomics.c
[2/7] Write swift-version--423B1241ED78D482.txt
Fetching https://github.com/apple/swift-nio.git from cache
Fetched https://github.com/apple/swift-nio.git from cache (0.28s)
Computing version for https://github.com/apple/swift-nio.git
Computed https://github.com/apple/swift-nio.git at 2.63.0 (0.02s)
Fetching https://github.com/apple/swift-system.git from cache
Fetching https://github.com/apple/swift-atomics.git from cache
Fetching https://github.com/apple/swift-collections.git from cache
Fetched https://github.com/apple/swift-system.git from cache (0.18s)
Fetched https://github.com/apple/swift-collections.git from cache (0.18s)
Fetched https://github.com/apple/swift-atomics.git from cache (0.18s)
Computing version for https://github.com/apple/swift-system.git
Computed https://github.com/apple/swift-system.git at 1.2.1 (0.01s)
Computing version for https://github.com/apple/swift-atomics.git
Computed https://github.com/apple/swift-atomics.git at 1.2.0 (0.02s)
Computing version for https://github.com/apple/swift-collections.git
Computed https://github.com/apple/swift-collections.git at 1.1.0 (0.02s)
Creating working copy for https://github.com/apple/swift-nio.git
Working copy of https://github.com/apple/swift-nio.git resolved at 2.63.0
Creating working copy for https://github.com/apple/swift-collections.git
Working copy of https://github.com/apple/swift-collections.git resolved at 1.1.0
Creating working copy for https://github.com/apple/swift-system.git
Working copy of https://github.com/apple/swift-system.git resolved at 1.2.1
Creating working copy for https://github.com/apple/swift-atomics.git
Working copy of https://github.com/apple/swift-atomics.git resolved at 1.2.0
[0/1] Planning build
Building for debugging...
In file included from /Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Clibunwind/Clibunwind.cpp:1:
/Users/builder/builds/UKfvDsi8u/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Clibunwind/include/Clibunwind.h:33:3: error: "Unsupported arch"
# error "Unsupported arch"
  ^
1 error generated.
[0/5] Compiling Clibunwind Clibunwind.cpp
[0/5] Compiling c-nioatomics.c
[0/5] Compiling c-atomics.c
[0/5] Compiling CSwiftBacktrace CSwiftBacktrace.cpp
[0/5] Write swift-version--423B1241ED78D482.txt
BUILD FAILURE 5.10 macosSpm