rust-format-buffer turns unicode symbols into whitespace

[bepzi]

With (setq rust-format-on-save t), the following code:

let номер = 42;

becomes:

let       = 42;

After saving the file.

[tromey]

Could you try rustfmt outside of emacs and see if it still fails?

[bepzi]

cargo fmt and rustup run nightly rustfmt work as expected.

[brotzeit]

I think we need to do (set-process-coding-system process 'utf-8-emacs-unix 'utf-8-emacs-unix).