Cargo Features

[dependencies]
rocket_static_fs = { version = "0.5.1", default-features = false, features = ["content_encoding"] }
default = content_encoding

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

content_encoding default = flate2

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.

flate2 content_encoding