retour is used at run time in 8 crates (of which 3 optionally). It is a direct run-time dependency in 6 crates. It's used only as a dev dependency in 1 crate.

Depender (with downloads and own rev deps) retour version
110 deucalion ^0.3
2 grappler-core ^0.3.1
retour-utils ^0.3.0
open-coroutine-hooks ^0.3.1
1 gmod optional ^0
pox optional ^0.3
bevy_schedule_dispatch dev ^0.3