bytemuck_derive is used at run time in 535 crates (of which 81 optionally, 7 directly). It's used only as a dev dependency in 21 crates.

Depender (with downloads and own rev deps) bytemuck_derive version
416K 237 bytemuck optional ^1
1 assembly-data ^1
blown-fuse ^1.0.1
good-web-game ^1.0.1
md-mage ^1.0
mterm ^1.0
1 splashsurf_lib ^1.0