@jjg
The memory safety of rust is interesting for real-time systems where memory leaks last forever. I think the googs are exploiting that fact now in fuchsia.
It's perfectly fine for arm, but bin sizes can be a problem for embedded systems. The rust runtime and stdlib are nontrivial in size. Also, like any OO lang, output code bloat is pretty rapid as complexity grows.
My take: it's good if you have a lot of people with varying skill levels all facerolling the same code.