[bjz_]

Rust's type system eliminates the need to test for whole classes of bugs, because they are statically checked for at compile time. This means that tests can be more focused on logic errors rather than standard book keeping. If you look at the example set by the rust repository itself (https://github.com/mozilla/rust/), it is heavily tested and every single PR (https://github.com/mozilla/rust/pulls) is reviewed before merging. This discipline definitely filters down into third party libraries.