Clean up whatever changes you made (if any)

You can do some quick formatting and linting stuff:

# will automatically clean up your code, where it can
cargo fmt

# will helpfully bark at you as you learn Rust patterns
cargo clippy

These are two tools are useful as pipeline steps for code hygiene verification, but also EXTREMELY USEFUL FOR LEARNING AS YOU GO.

Neither step above should make any changes on the default files in this repository. It's just good to know they are there and work. cargo fmt, by default, will format code on disk. If you don't wish to do that, you'd want to use cargo fmt --check.