Cargo Features

[dependencies]
trivial_colours = { version = "0.3.0", default-features = false, features = ["use_winapi"] }
default = use_winapi

The use_winapi feature is set by default whenever trivial_colours is added without default-features = false somewhere in the dependency tree.

use_winapi default = kernel32-sys, lazy_static, winapi

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.

kernel32-sys win use_winapi
lazy_static win use_winapi

Enables lazy_static ^0.2

winapi win use_winapi

Enables winapi ^0.2