Linux

You can tailor the rust standard library to be more embedded friendly in several way, like if you don't have dynamic memory allocation or a filesystem, you can get the standard library sans those features.

Rust also gives you a very fine grained level of control of memory, I think equivalent to C (maybe there's some gotcha that I'm not aware of but if not equivalent very close).

It really doesn't sound like you know that much about Rust here and are just making things up, you certainly don't need "gigabytes of storage and memory"