It's used only as a dev dependency in 4 crates.

Depender (with downloads and own rev deps) gonzales version
7.1M 79 matchit dev ^0.0.3-beta
44K 21 path-tree dev ^0.0.3-beta
200 pavex_matchit dev ^0.0.3-beta
150 matchthem dev ^0.0.3-beta