cargo-readme is used at run time in 2 crates. It's used at build time in 6 crates (of which 1 optionally, 4 directly). It's used only as a dev dependency in 4 crates.

Depender (with downloads and own rev deps) cargo-readme version
170 cargo-unleash optional ^3.2
coin-tosser ^3.1.2
etc-passwd dev ^3.2.0
exile build ^3.2.0
2 harbourmaster build ^3.1.2
1 lcov dev ^3.2.0
neurarbor dev ^3.2.0
stan dev ^3.2.0
xdoc build ^3.2.0
xtest build ^3.2.0