Build Information
Failed to build ClangSwift, reference 0.0.4 (4ea3be), with Swift 6.3 for macOS (SPM) on 10 Apr 2026 16:41:04 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64Build Log
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RunAll
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Builder version: 4.70.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/llvm-swift/clangswift.git
Reference: 0.0.4
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/llvm-swift/clangswift
* tag 0.0.4 -> FETCH_HEAD
HEAD is now at 4ea3bed Fix crash when disposing a CXPlatformAvailability struct.
Cloned https://github.com/llvm-swift/clangswift.git
Revision (git rev-parse @):
4ea3bed27e5352e9fcb33f766bca7d549b53c738
SUCCESS checkout https://github.com/llvm-swift/clangswift.git at 0.0.4
error: 'spi-builder-workspace': package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.3' to specify the current tools version
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Build
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Selected platform: macosSpm
Swift version: 6.3
Building package at path: $PWD
https://github.com/llvm-swift/clangswift.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64
error: 'spi-builder-workspace': package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.3' to specify the current tools version
error: 'spi-builder-workspace': package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.3' to specify the current tools version
BUILD FAILURE 6.3 macosSpm