proc-macro-error
v1.0.4 GrowingAlmost drop-in replacement to panics in proc-macros
Quick Verdict
- ✕Not updated for 5+ years
- ✓Stable API (1.x for 6+ years)
- ✓Massive adoption (5.5K crates depend on it)
- ✓Permissive license (MIT OR Apache-2.0)
Security
Deep Insights
13.0M downloads in the last 30 days (432.1K/day), up 11% from the previous period.
5.5K crates depend on proc-macro-error. Strong ecosystem adoption means battle-tested code and long-term stability.
proc-macro-error has only 1 owner despite 5.5K dependents. This is a bus-factor concern — consider the implications for long-term support.
The API has been stable (1.x) for over 6 years with 38 releases. This level of maturity means you can depend on it without worrying about breaking changes.
At 25KB, proc-macro-error is lightweight. Small crate size correlates with focused, well-scoped functionality.
11% of releases have been yanked. Check version history before pinning.
Notable dependents include structopt-derive, gtk3-macros, err-derive, yew-macro, static-regular-grammar. When high-quality crates choose proc-macro-error, 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 proc-macro-error
Version Adoption
Release Timeline
Feature Flags
default =["syn-error"]
