MPSC is used at run time in 28 crates (of which 1 optionally). It is a direct run-time dependency in 7 crates.

Depender (with downloads and own rev deps) MPSC version
470 1 handy-grpc ^0.2
200 1 task-exec-queue ^0.2
rsacracker ^0.2
500 4 rust-box optional ^0.2.4
simln-lib ^0.2.0
emulatorr ^0.2.0
1 stdr ^0.2.0