assert_matches
v1.5.0 GrowingAsserts that a value matches a pattern
Quick Verdict
- ✕Not updated for 5+ years
- ✓Stable API (1.x for 10+ years)
- ✓Massive adoption (23.7K crates depend on it)
- ✓Tiny footprint (8KB, 0 deps)
- ✓Permissive license (MIT/Apache-2.0)
Security
Deep Insights
4.1M downloads in the last 30 days (137.2K/day), up 17% from the previous period.
23.7K crates depend on assert_matches — it's part of the Rust ecosystem's core infrastructure. Removing it from your dependency tree would be extremely difficult.
assert_matches has only 1 owner despite 23.7K dependents. This is a bus-factor concern — consider the implications for long-term support.
The API has been stable (1.x) for over 10 years with 7 releases. This level of maturity means you can depend on it without worrying about breaking changes.
assert_matches has no external dependencies — minimal supply chain risk and fast compile times.
At 8KB, assert_matches is lightweight. Small crate size correlates with focused, well-scoped functionality.
Notable dependents include idna, futures, quinn-proto, jni, bs58. When high-quality crates choose assert_matches, it's a strong quality signal.
Health Breakdown
Recency, release consistency, active ratio
Yanked ratio, deps, size, maturity, features
Reverse deps, ownership, ecosystem
Downloads, momentum, growth trend
Docs, repo, license, metadata
Download Trend
Top Dependents
Most downloaded crates that depend on assert_matches
