Rust Systems & Services

Covers modern application-layer Rust (edition 2024): CLIs, web services, libraries. Not no_std/embedded.

Tooling

Tool	Purpose
`cargo`	Build, dep management, script runner
`clippy`	Lint (`cargo clippy --workspace --all-targets -- -D warnings`)
`rustfmt`	Formatter (`cargo fmt --all`)
`cargo-nextest`	Test runner, noticeably faster than `cargo test`, better isolation
`cargo-deny`	License + advisory + duplicate-dep checks
`cargo-machete`	Find unused dependencies

Pin rust-toolchain.toml per repo so every contributor and CI uses the same compiler.
cargo update -p <crate> for single-package upgrades. cargo update rewrites everything — avoid in PR diffs.
Cargo.lock goes in version control for binaries and libraries (modern guidance; reproducibility wins).