proc-macro-error-attr2 is used at run time in 1,955 crates (of which 523 optionally). It is a direct run-time dependency in 1 crate. It's used at build time in 166 crates (of which 67 optionally, ). It's used only as a dev dependency in 88 crates.

Depender (with downloads and own rev deps) proc-macro-error-attr2 version
1.0M 64 proc-macro-error2 =2.0.0