Cargo Features

Silk has no features set by default.

[dependencies]
silk = { version = "0.3.3", features = ["unstable", "asm"] }
unstable
asm = sha2-asm

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.

sha2-asm asm?

Enables sha2-asm ^0.3