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

Depender (with downloads and own rev deps) webauthn-authenticator-rs version
kanidm_tools ^0.5.0
fido-key-manager ^0.5.0
2 kanidmd_lib dev ^0.5.0