Decision Workspace
cargo-mutants vs cargo-llvm-cov vs cargo-crappy
Side-by-side comparison of Rust crates
57
cargo-mutants
stablev27.0.0
Inject bugs and see if your tests catch them
61
cargo-llvm-cov
growingv0.8.7
Cargo subcommand to easily use LLVM source-based code coverage (-C instrument-coverage).
48
cargo-crappy
experimentalv0.1.2
CRAP metric analysis for Rust — clippy-style diagnostics for change-risk, complexity, coverage, and idiomatic code
Core Metrics
| cargo-mutants | cargo-llvm-cov | cargo-crappy | |
|---|---|---|---|
| Health Score | 57 | 61 | 48 |
| Total Downloads | 317.6K | 5.8M | 41 |
| 30d Downloads | 28.8K | 332.9K | 0 |
| Dependents | 6 | 271 | 0 |
| Releases | 70 | 122 | 3 |
| Last Updated | 79d ago | 13d ago | 2d ago |
| Age | 4y 7m | 5y 4m | 4d |
Health Breakdown
cargo-mutants
Maintenance
16
Quality
15
Community
7
Popularity
7
Documentation
12
cargo-llvm-cov
Maintenance
18
Quality
10
Community
13
Popularity
8
Documentation
12
cargo-crappy
Maintenance
14
Quality
14
Community
6
Popularity
2
Documentation
12
Technical Details
| cargo-mutants | cargo-llvm-cov | cargo-crappy | |
|---|---|---|---|
| Version | 27.0.0 | 0.8.7 | 0.1.2 |
| Stable (≥1.0) | ✓ Yes | ✗ No | ✗ No |
| License | MIT | Apache-2.0 OR MIT | MIT |
| Dependencies | 48 | 22 | 3 |
| Crate Size | 240KB | 106KB | 30KB |
| Features | 0 | 0 | 0 |
| Yanked % | 0.0% | 2.5% | 0.0% |
| Edition | 2024 | 2021 | 2024 |
| MSRV | 1.88 | 1.87 | 1.85 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •cargo-llvm-cov leads with a health score of 61/100, but none of the options score above 80.
- •cargo-llvm-cov is depended on by 271 crates — strongest ecosystem trust.
- •cargo-llvm-cov, cargo-crappy are pre-1.0 — API may change.