Cargo Features

[dependencies]
buffer-redux = { version = "1.0.1", default-features = false, features = ["slice-deque"] }
default = slice-deque

The slice-deque feature is set by default whenever buffer-redux 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.

slice-deque unix win default