[xcode16 beta] compilation error


I have a project that compiles from the command line correctly with Swift 6, but fails when using the toolchain in Xcode 16 beta. I suspect an issue with XCode 16 itself. It compiles OK with Xcode 15.4.

➜  ~ ls /Library/Developer/Toolchains/                                 
swift-6.0-DEVELOPMENT-SNAPSHOT-2024-06-13-a.xctoolchain swift-latest.xctoolchain

➜  ~ swift --version 
Apple Swift version 6.0-dev (LLVM 6e13b8be259f20f, Swift 372de4670b9cd55)
Target: arm64-apple-macosx14.0

➜  project git:(main) ✗ export TOOLCHAINS=swift
➜  project git:(main) ✗ rm -rf .build/                       
➜  project git:(main) ✗ swift build            
Fetching https://github.com/jpsim/Yams from cache
Fetched https://github.com/jpsim/Yams from cache (0.50s)
Computing version for https://github.com/jpsim/Yams.git
Computed https://github.com/jpsim/Yams.git at 5.1.2 (0.06s)
Creating working copy for https://github.com/jpsim/Yams
Working copy of https://github.com/jpsim/Yams resolved at 5.1.2
Building for debugging...
[32/32] Linking project.dylib
Build complete! (23.15s)

But when using the same toolchain with XCode 16.0 beta, it fails with these errors:

Compilation works well with the same toolchain on Xcode 15.4. I guess it's an Xcode 16 error. Where can I report these ?