Cargo Features

[dependencies]
broccoli-tree = { version = "0.7.0", default-features = false, features = ["rayon"] }
default = rayon

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

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.

rayon default

Affects broccoli-tree::new_par, broccoli-tree::new_owned_par