It's used only as a dev dependency in 5 crates.

Depender (with downloads and own rev deps) gonzales version
7.3M 81 matchit dev ^0.0.3-beta
47K 22 path-tree dev ^0.0.3-beta
100 rou3 dev ^0.0.3-beta
pavex_matchit dev ^0.0.3-beta
matchthem dev ^0.0.3-beta