Swift Toolchain fails to compile with tbb::captured_exception: Unidentified exception

Hi! Not sure if I use the right category here. Trying the Swift Toolchain from June 9. I fixed the issues with not found libraries via SR-12001, but now I get this:

TBB Warning: Exact exception propagation is requested by application but the linked library is built without support for it
libc++abi.dylib: terminating with uncaught exception of type tbb::captured_exception: Unidentified exception
clang-10: error: unable to execute command: Abort trap: 6
clang-10: error: linker command failed due to signal (use -v to see invocation)

No idea what this is, Google fails me, we don't sue TBB in our code.
This is a mixed language project, C, C++, ObjC, ObjC++ and Swift. The error happens at the link stage.

Do you know what process is failing with that error? We don't use TBB for any LLVM or Swift tooling to the best of my knowledge either.

Ignore me, this was because we use zld. Disabling creates a different issue, but this is solved.

Maybe it helps someone else in the future. Thanks!!