Cargo Features

[dependencies]
aws-lambda-log-proxy = { version = "0.4.0", default-features = false, features = ["emf"] }
default = emf

The emf feature is set by default whenever aws-lambda-log-proxy is added without default-features = false somewhere in the dependency tree.

emf default = 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_json emf