Currently, I mainly use Neovim to code in Rust (and pretty much any other language). The problem is that when you start a new Rust project and begin creating structs and functions all over the place, you get flooded with warnings about “unused this” and “unused that”.

Maybe many of you probably already know this, but a quick trick to avoid those warnings is to simply run:
export RUSTFLAGS="-Awarnings".

This will disable all warnings, but it can be very convenient during early development.