env_filter is used at run time in 1,636 crates (of which 138 optionally). It is a direct run-time dependency in 9 crates. It's used at build time in 29 crates (of which 2 optionally, ). It's used only as a dev dependency in 769 crates.

Depender (with downloads and own rev deps) env_filter version
8.2M 7815 env_logger ^0.1.0
353K 49 android_logger ^0.1
9.6K 2 logforth ^0.1
3.6K hilog ^0.1.0
650 hitdns ^0.1.0
300 krossbar-logger ^0.1
190 1 gelf_logger ^0.1.0
120 krossbar-log-viewer ^0.1
krossbar-log-control ^0.1