In my experience, Python’s name has never been a problem for searchability, and I seriously doubt that Rust’s will be either. Searching ‘Rust file I/O’ isn’t going to turn up results about how to use iron oxide to read and write from files. I don’t think that adding an extra ‘t’ to the end of the name is going to help either, because if it weren’t popular enough search engines would just auto-correct it to ‘Rust’ anyway, or at least also include results for ‘Rust’.
If anybody is encountering searchability problems now, those would likely disappear if Rust became popular enough.