Cargo Features

[dependencies]
contraband = { version = "0.1.2", default-features = false, features = ["rustls"] }
default = rustls

The rustls feature is set by default whenever contraband 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.

rustls default

Enables rustls ^0.17.0