Cargo Features

replicante_logging has no features set by default.

[dependencies]
replicante_logging = { version = "0.1.4", features = ["journald"] }
journald = slog-journald

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.

slog-journald journald?