ref_slice is used at run time in 46 crates (of which 7 optionally). It is a direct run-time dependency in 10 crates. It's used only as a dev dependency in 2 crates.

Depender (with downloads and own rev deps) ref_slice version
76K 19 kafka ^1.2.1
1 earley-omnitool ^1.2
framed ^1.1.1
cargo-frc ^1.1.1
3 panini ^1.0
ntree ^1
bdb ^1
2 bstring ^1.1
cargo-rbot ^1.2.0
5 gearley ^1.2