Cargo Features

rs_tracing has no features set by default.

[dependencies]
rs_tracing = { version = "1.1.0", features = ["rs_tracing"] }
rs_tracing = 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 rs_tracing?
serde_json rs_tracing?