Cargo Features

[dependencies]
autoconfig = { version = "0.4.0", default-features = false, features = ["runtime-tokio", "runtime-async-std"] }
default = runtime-tokio

The runtime-tokio feature is set by default whenever autoconfig is added without default-features = false somewhere in the dependency tree.

runtime-tokio default
runtime-async-std

Enables async-std-resolver ^0.22.0

Autoconfig has 3 features without comments.