Cargo Features

clipboard-substitutor has no features set by default.

clipboard-substitutor = { version = "0.7.0", features = ["journald"] }
journald = tracing-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.

tracing-journald journald?