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proc-macro-error2 vs proc-macro-error3 vs proc-macro-error

Side-by-side comparison of Rust crates

Core Metrics

proc-macro-error2proc-macro-error3proc-macro-error
Health Score515653
Total Downloads121.8M137.1K308.2M
30d Downloads9.6M121.7K7.9M
Dependents1.2K175.7K
Releases5338
Last Updated675d ago34d ago2173d ago
Age2y 10m1m7y

Health Breakdown

proc-macro-error2
Maintenance
4
Quality
14
Community
13
Popularity
8
Documentation
12
proc-macro-error3
Maintenance
12
Quality
18
Community
8
Popularity
6
Documentation
12
proc-macro-error
Maintenance
6
Quality
16
Community
14
Popularity
8
Documentation
9

Technical Details

proc-macro-error2proc-macro-error3proc-macro-error
Version2.0.13.0.21.0.4
Stable (≥1.0)✓ Yes✓ Yes✓ Yes
LicenseMIT OR Apache-2.0MIT OR Apache-2.0MIT OR Apache-2.0
Dependencies668
Crate Size25KB36KB25KB
Features342
Yanked %40.0%0.0%10.5%
Edition202120212018
MSRV1.611.61
Owners111

Quick Verdict

  • proc-macro-error3 leads with a health score of 56/100, but none of the options score above 80.
  • proc-macro-error has the most downloads (308.2M), suggesting wider adoption.
  • proc-macro-error is depended on by 5.7K crates — strongest ecosystem trust.
  • ⚠ proc-macro-error2, proc-macro-error have not been updated in over a year.