Cargo Features

[dependencies]
serial-io = { version = "0.3.0", default-features = false, features = ["libudev", "tokio"] }
default = libudev

The libudev feature is set by default whenever serial-io is added without default-features = false somewhere in the dependency tree.

libudev default

Enables libudev of serialport

tokio = futures, tokio_crate

Affects unix::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 tokio?
tokio_crate tokio?

Enables tokio