env_filter is used at run time in 1,554 crates (of which 126 optionally). It is a direct run-time dependency in 9 crates. It's used at build time in 22 crates (of which 1 optionally, ). It's used only as a dev dependency in 747 crates.

Depender (with downloads and own rev deps) env_filter version
9.0M 7734 env_logger ^0.1.0
336K 49 android_logger ^0.1
6.8K 2 logforth ^0.1
4.0K hilog ^0.1.0
800 1 gelf_logger ^0.1.0
750 hitdns ^0.1.0
300 krossbar-logger ^0.1
krossbar-log-viewer ^0.1
krossbar-log-control ^0.1