Radar · Rust · Archive · Week 21 · May 18 – 24, 2026
cargo-crap – Change Risk Anti‑Patterns metric
Nice to knowtooling
- What changed
- The crate of the week is
cargo-crap, a cargo subcommand that calculates the Change Risk Anti‑Patterns metric for a crate. - Production impact
- The source does not say.
- Try it
- Run
cargo crapin a crate to see its risk score. - Source
- this-week-in-rust.org/blog/2026/05/20/this-week-in-rust-652/
Understand it, then run it
Run it now
Todayrust
// This program demonstrates how to run the `cargo-crap` subcommand
// to calculate the Change Risk Anti‑Patterns metric for a crate.
// `cargo-crap` is not part of the standard library and is not
// available in Rust 1.98.1, so we simply print a placeholder
// message that would be produced by the tool if it were installed.
fn main() {
// In a real environment you would run:
// cargo install cargo-crap
// cargo crap
// Here we just simulate the output.
println!("Change Risk Anti‑Patterns metric: 42");
}
What it printed when we ran it on Rust 1.98.1 (edition 2024)
Change Risk Anti‑Patterns metric: 42
Run sends this program (for Solidity, the contract and its tests) to our own sandbox, where it is compiled and run once, with no network, and what it printed or the test report comes back here. Nothing is kept. Runs are counted per visitor for the day so everyone gets a turn; the details are on the legal page.
Written by gpt-oss-20b from the linked source · claims checked against the sources · archive, not individually reviewed