fibers_http_server is used at run time in 3 crates. It's used only as a dev dependency in 2 crates.

Depender (with downloads and own rev deps) fibers_http_server version
9.9K 6 rustracing_jaeger dev ^0.1
1 fibers_http_client dev ^0.1
frugalos ^0.1.12
mizumochi ^0.1
rofis ^0.1