Cargo Features

apint = { version = "0.2.0", default-features = false, features = ["rand_support", "serde_support"] }
default = rand_support, serde_support

These default features are set whenever apint is added without default-features = false somewhere in the dependency tree.

rand_support default = rand
serde_support default = serde, serde_derive

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.

rand rand_support

Enables rand ^0.4

serde serde_support
serde_derive serde_support