Cargo Features

[dependencies]
greyhound = { version = "0.0.1", default-features = false, features = ["h1-server"] }
default = h1-server

The h1-server feature is set by default whenever greyhound is added without default-features = false somewhere in the dependency tree.

h1-server default = async-h1

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

async-h1 h1-server