num_threads is used at run time in 1,623 crates (of which 1,622 optionally). It is a direct run-time dependency in 3 crates. It's used at build time in 170 crates (of which 170 optionally, ). It's used only as a dev dependency in 72 crates.

Depender (with downloads and own rev deps) num_threads version
8.2M 2791 time optional ^0.1.2
340 cargo-cleaner ^0.1.6
clia-time ^0.1.2