I made a n64 Rust env that's open source that's albeit a bit raw but was enough to be able to build ROMs of PowerPoint-esque slides of talk of a post mortem getting to that point.
Edit: the general thesis was that while we as embedded fairly treat new languages in the embedded space with skepticism, Rust is a legitimate entry. It's not GCed (in the traditional sense) has similar perf and (more importantly) determinism. And by the very nature that the slides are on an N64, it's remarkably possible to support off the beaten path boards.
https://github.com/monocasa/sides-bsw19
If you want to use some of the same stuff hit me up on GitHub.