BUILD_TIME is used at run time in 72 crates (of which 25 optionally). It is a direct run-time dependency in 11 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
10K 24 esp-idf-sys ^0.1
850 blaze-cli ^0.1
280 shadowsocks-rust ^0.1
190 cargo-hfmp ^0.1.3
hermit-kernel ^0.1.3
inrust ^0.1
re-sol ^0.1.2
redismultiplexer ^0.1.1
rgpsd ^0.1.2
rusty_vault ^0.1
pabitell-lib optional ^0.1