Cargo Features

[dependencies]
ciborium = { version = "0.2.2", default-features = false, features = ["std"] }
default = std

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

std default

Enables std of ciborium-io and serde

serde:

Provide impls for common standard library types like Vec<T> and HashMap<K, V>.
Requires a dependency on the Rust standard library.

Ciborium has 2 features without comments.