Cargo Features

syslog_rfc5424 has no features set by default.

[dependencies]
syslog_rfc5424 = { version = "0.9.0", features = ["serde-serialize"] }
serde-serialize = serde, serde_json

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.

serde serde-serialize?
serde_json serde-serialize?