I am working on fedi software that is hoping to allow Kodi, Plex and Popcorn Time get rid of IMDb/TMDB dependency. Dm me if you're skilled in SvelteKit and/or Go, especially the Fiber framework, or machine learning with Rust and willing to contribute.
Anything that can run C++ should be able to run Rust if you use the LLVM backend, perhaps except when a watch uses musl libc and you rely on some glibc-only call in your program. afaik the only physical devices shipping with musl are car infotainment systems based on l4 kernels and networking hardware (OpenWRT).