target-features is used at run time in 130 crates (of which 26 optionally). It is a direct run-time dependency in 3 crates. It's used only as a dev dependency in 4 crates.

Depender (with downloads and own rev deps) target-features version
111K 15 multiversion ^0.1
110K 1 multiversion-macros ^0.1
850 lav optional ^0.1.5