Cargo Features

[dependencies]
s2 = { version = "0.0.13", default-features = false, features = ["serde", "float_extras", "rand"] }
default = float_extras, serde

These default features are set whenever s2 is added without default-features = false somewhere in the dependency tree.

serde default

Enables serde, serde of bigdecimal ^0.3.0

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.

float_extras default
rand implicit feature

Enables rand

rand:

Random number generators and other randomness functionality