You have a stack dump, which means you will get all the information if you symbolicate your crash report. Xcode can do it for you automatically, but some manual methods also exist.
Maybe the friendly default would be to have the symbolicated reports on, but perhaps this has performance impact so it’s off.
As a comment just below says, the solution is quite simple:
> ensure you have llvm-symbolizer in your PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it
This doesn't provide anything useful either.
> zsh: illegal hardware instruction LLVM_SYMBOLIZER_PATH=/usr/local/opt/llvm/bin/llvm-symbolizer swift main.swift
zsh: illegal hardware instruction swift main.swift