Cargo Features

Proguard has no features set by default.

[dependencies]
proguard = { version = "5.5.0", features = ["uuid"] }
uuid = lazy_static

Enables uuid

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.

lazy_static uuid?