It's used only as a dev dependency in 12 crates.

Depender (with downloads and own rev deps) OnDrop version
230 5 ach-ring dev ^0.1
180 3 ach-array dev ^0.1
180 4 ach-cell dev ^0.1
170 3 ach-option dev ^0.1
140 1 ach-linked dev ^0.1
140 2 ach-mpmc dev ^0.1
130 3 fixed-queue dev ^0.1
2 ach-pubsub dev ^0.1
2 ach-once dev ^0.1
2 ach-lazy dev ^0.1
2 ach-spsc dev ^0.1
1 ach-pool dev ^0.1