cargo-feature-0.5.0 is not a library.
cargo-feature
Install
cargo install cargo-feature
Usage
# add serde_derive feature to build-dependency of serde
cargo feature serde +serde_derive
# add HtmlDivElement feature to dependency of web_sys
cargo feature web_sys +HtmlDivElement
# same as above but remove
cargo feature web_sys ^HtmlDivElement