Cargo Features

icmp-client = { version = "0.2.0", default-features = false, features = ["impl_async_io", "impl_tokio"] }
default = impl_tokio

The impl_tokio feature is set by default whenever icmp-client is added without default-features = false somewhere in the dependency tree.

impl_async_io = async-io

Affects icmp-client::impl_async_io

impl_tokio default = tokio

Affects icmp-client::impl_tokio

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-io impl_async_io?

Enables async-io ^1

tokio impl_tokio