Cargo Features

[dependencies]
chrony-candm = { version = "0.1.2", default-features = false, features = ["with_tokio"] }
default = with_tokio

The with_tokio feature is set by default whenever chrony-candm is added without default-features = false somewhere in the dependency tree.

with_tokio default = futures, 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.

futures with_tokio
tokio with_tokio