On the other hand, if you're already using Rust, why switch to another language just to talk to the database?
https://crates.io/crates/postgres/
https://crates.io/crates/mysql/
This is an experimental approach. It might or might not be useful, but you don't have to use it.
It seems like the intersection of good use case for Rust and need to use SQL, will also intersect with "minimal SQL needs", hence preference for simpler libraries.
And a lot of them really suck, too, because it's a hard problem. I'll take query builders or raw SQL over ORMs any day of the week.