Cargo Features

[dependencies]
cargo-cats = { version = "0.1.13", default-features = false, features = ["nightly-features", "env-var", "build"] }
default = build, env-var

These default features are set whenever cargo-cats is added without default-features = false somewhere in the dependency tree.

nightly-features
env-var default
build default

cargo-cats has 4 features without comments.