Cargo Features

[dependencies]
docdb = { version = "0.1.0", default-features = false, features = ["json", "yaml", "cbor", "bincode"] }
default = json

The json feature is set by default whenever docdb is added without default-features = false somewhere in the dependency tree.

json default = serde_json
yaml = serde_yaml
cbor
bincode

Enables bincode

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 json
serde_yaml yaml?