BUILD_TIME is used at run time in 58 crates (of which 16 optionally). It is a direct run-time dependency in 10 crates. It's used at build time in 1 crate (). It's used only as a dev dependency in 2 crates.

Depender (with downloads and own rev deps) BUILD_TIME version
11K 22 esp-idf-sys ^0.1
800 rusty_vault ^0.1
430 shadowsocks-rust ^0.1
inrust ^0.1
re-sol ^0.1.2
blaze-cli ^0.1
redismultiplexer ^0.1.1
rgpsd ^0.1.2
rtx-cli-test ^0.1.2
pabitell-lib optional ^0.1