Cargo Features

scrypt = { version = "0.12.0-pre.0", default-features = false, features = ["std", "simple"] }
default = simple, std

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

std default

Enables std of password-hash

optional dependencies

simple default = password-hash

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.

password-hash simple std