Not sure it's harder. Rust type system makes it much harder to shoot yourself in the foot with nils and errors, at least. Biggest issue is probably the number of 3rd party dependencies every non-trivial Rust app ends up needing.

I guess other languages that follow a stricter/larger compile time regimen e.g. Haskell, OCaml, Idris, ATS, F* would be suitable as well for this kind of approach. Like Go, OCaml seems to offer low compilation times.