UNINITIALIZED is used at run time in 278 crates (of which 7 optionally). It is a direct run-time dependency in 4 crates. It's used only as a dev dependency in 2 crates.

Depender (with downloads and own rev deps) UNINITIALIZED version
2.7K 4 resize-slice ^0.0
1 nue-io ^0.0
460 5 pod optional ^0.0.2
byteorder-pod optional ^0.0.2