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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
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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/norio-nomura/swiftbacktrace.git
Reference: 1.0.1
Initialized empty Git repository in /Users/admin/builds/J1XnyXFH/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/.git/
From https://github.com/norio-nomura/swiftbacktrace
 * tag               1.0.1      -> FETCH_HEAD
HEAD is now at 1b4bbe8 Merge pull request #19 from norio-nomura/revert-#18
Cloned https://github.com/norio-nomura/swiftbacktrace.git
Revision (git rev-parse @):
1b4bbe87c19d5e2e04786d8140ab36fec4b7881b
SUCCESS checkout https://github.com/norio-nomura/swiftbacktrace.git at 1.0.1
========================================
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
[2/7] Compiling CSwiftBacktrace CSwiftBacktrace.cpp
In file included from /Users/admin/builds/J1XnyXFH/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Clibunwind/Clibunwind.cpp:1:
/Users/admin/builds/J1XnyXFH/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Clibunwind/include/Clibunwind.h:33:3: error: "Unsupported arch"
# error "Unsupported arch"
  ^
1 error generated.
[3/7] Compiling Clibunwind Clibunwind.cpp
[3/7] Write swift-version--423B1241ED78D482.txt
[3/7] Compiling c-nioatomics.c
[3/7] Compiling c-atomics.c
Fetching https://github.com/apple/swift-nio.git from cache
Fetched https://github.com/apple/swift-nio.git from cache (0.33s)
Computing version for https://github.com/apple/swift-nio.git
Computed https://github.com/apple/swift-nio.git at 2.63.0 (0.05s)
Fetching https://github.com/apple/swift-atomics.git from cache
Fetching https://github.com/apple/swift-collections.git from cache
Fetching https://github.com/apple/swift-system.git from cache
Fetched https://github.com/apple/swift-atomics.git from cache (0.20s)
Fetched https://github.com/apple/swift-system.git from cache (0.22s)
Fetched https://github.com/apple/swift-collections.git from cache (0.22s)
Computing version for https://github.com/apple/swift-system.git
Computed https://github.com/apple/swift-system.git at 1.2.1 (0.03s)
Computing version for https://github.com/apple/swift-atomics.git
Computed https://github.com/apple/swift-atomics.git at 1.2.0 (0.05s)
Computing version for https://github.com/apple/swift-collections.git
Computed https://github.com/apple/swift-collections.git at 1.1.0 (0.03s)
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-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-atomics.git
Working copy of https://github.com/apple/swift-atomics.git resolved at 1.2.0
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
[0/1] Planning build
Building for debugging...
In file included from /Users/admin/builds/J1XnyXFH/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Clibunwind/Clibunwind.cpp:1:
/Users/admin/builds/J1XnyXFH/0/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Clibunwind/include/Clibunwind.h:33:3: error: "Unsupported arch"
# error "Unsupported arch"
  ^
1 error generated.
[0/4] Compiling Clibunwind Clibunwind.cpp
[0/4] Compiling c-atomics.c
[0/4] Compiling c-nioatomics.c
[0/4] Write swift-version--423B1241ED78D482.txt
BUILD FAILURE 5.10 macosSpm