Cargo Features

[dependencies]
mr-ulid = { version = "1.1.1", default-features = false, features = ["serde", "rand"] }
default = rand

The rand feature is set by default whenever mr-ulid is added without default-features = false somewhere in the dependency tree.

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 implicit feature

Enables serde

serde:

A generic serialization/deserialization framework

rand default

Affects generator::STANDARD_ENTROPY_SOURCE