Cargo Features

sunshine-identity-ffi has no features set by default.

[dependencies]
sunshine-identity-ffi = { version = "0.2.3", features = ["faucet"] }
faucet = sunshine-faucet-client

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.

sunshine-faucet-client faucet?