tokio-async-await is used at run time in 5 crates (of which 1 optionally).

Depender (with downloads and own rev deps) tokio-async-await version
actix-web-async-await ^0.1.4
daemon-engine ^0.1.6
nestor ^0.1.4
doh-proxy-rs ^0.1
430 5 tower-web optional ^0.1.4