Cargo Features

MessyJson has no features set by default.

messy_json = { version = "0.2.3", features = ["uuid"] }
uuid = feat_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.

feat_uuid uuid?

Enables uuid ^0.8