Finding people willing to review rust must be much easier than finding someone willing to review c.
The code smell in Rust is usually marked with ,,unsafe'', Boxing / reference counters, or dynamic behaviour, which is very easy to search for.
Vec + generational indices might be the other way, is that preferred over Rc?
Most of the times it isn't. Just as an example here's a random part of serde, the high quality serialization library in Rust:
https://github.com/serde-rs/serde/blob/master/serde/src/priv...
The amount of extra automatic memory management is often a good indicator of not well thought out data structures (although of course they are not always needed).
But I suspect there are probably more people who are experts in device driver code and know kernel internals than all people who know rust.