Cargo Features

dcf = { version = "0.6.3", default-features = false, features = ["prg", "multithread"] }
default = multithread

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

prg = aes

Affects dcf::prg

multithread default = rayon

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.

aes prg?
rayon multithread