Cargo Features

[dependencies]
ctrlc-async = { version = "3.2.2", default-features = false, features = ["termination", "tokio", "async-std"] }
default = tokio

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

termination

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.

tokio default
async-std implicit feature

Enables async-std

async-std:

Async version of the Rust standard library