Cargo Features

[dependencies]
sungod = { version = "0.3.1", default-features = false, features = ["std", "default_is_random"] }
default = std

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

std default default_is_random?
default_is_random = std

Sungod has 3 features without comments.