Use rustfmt automatically everywhere. While in C++ there are many
different coding styles, the Rust community is in agreement (at least,
they're in agreement that it's a good idea to be in agreement). That
is codified in rustfmt. Use it, automatically, on every submission.
Use clippy somewhere. Its lints are useful.
Use IDEs more liberally. Even staunch vim-adherents (your author!)
prefer to use an IDE with Rust, because it's simply invaluable to show
type annotations. Type information is typically invisible in the language
so in Rust you're more reliant on tooling assistance.
Deny unsafe code by default. (#![forbid(unsafe_code)]).