authenticator-ctap2-2021 is used at run time in 3 crates (of which 2 optionally). It is a direct run-time dependency in 2 crates. It's used only as a dev dependency in 1 crate.

Depender (with downloads and own rev deps) authenticator-ctap2-2021 version
2.9K 3 webauthn-authenticator-rs optional ^0.3.2-dev.1
authenticator-cli ^0.3.2-dev.1