service-async is used at run time in 6 crates.

Depender (with downloads and own rev deps) service-async version
430 4 monoio-http ^0.2.0
150 1 monoio-transports ^0.2.0
120 1 monolake-services ^0.2.3
2 monolake-core ^0.2.3
monolake ^0.2.3
monoio-http-client ^0.2.0