Decision Workspace
happylock vs no_deadlocks vs async-lock
Side-by-side comparison of Rust crates
50
happylock
growingv0.5.1
Free deadlock prevention
49
no_deadlocks
growingv1.3.2
A Runtime Deadlock Debugger
73
async-lock
stablev3.4.2
Async synchronization primitives
Core Metrics
| happylock | no_deadlocks | async-lock | |
|---|---|---|---|
| Health Score | 50 | 49 | 73 |
| Total Downloads | 13.6K | 1.0M | 192.4M |
| 30d Downloads | 18 | 263.5K | 11.8M |
| Dependents | 0 | 36 | 3.4K |
| Releases | 14 | 8 | 32 |
| Last Updated | 48d ago | 859d ago | 96d ago |
| Age | 2y | 6y 1m | 6y 10m |
Health Breakdown
happylock
Maintenance
16
Quality
9
Community
5
Popularity
5
Documentation
15
no_deadlocks
Maintenance
4
Quality
22
Community
7
Popularity
7
Documentation
9
async-lock
Maintenance
13
Quality
20
Community
20
Popularity
8
Documentation
12
Technical Details
| happylock | no_deadlocks | async-lock | |
|---|---|---|---|
| Version | 0.5.1 | 1.3.2 | 3.4.2 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✓ Yes |
| License | CC0-1.0 | MPL-2.0 | Apache-2.0 OR MIT |
| Dependencies | 5 | 2 | 9 |
| Crate Size | 53KB | 8KB | 40KB |
| Features | 1 | 2 | 3 |
| Yanked % | 50.0% | 0.0% | 0.0% |
| Edition | 2021 | 2018 | 2021 |
| MSRV | 1.82 | — | 1.85 |
| Owners | 1 | 1 | 2 (team) |
Links
Quick Verdict
- •async-lock leads with a health score of 73/100, but none of the options score above 80.
- •async-lock is depended on by 3.4K crates — strongest ecosystem trust.
- •⚠ no_deadlocks has not been updated in over a year.
- •happylock is pre-1.0 — API may change.