Cargo Features

maligned = { version = "0.2.1", default-features = false, features = ["alloc", "align-1k", "align-2k", "align-4k", "align-8k", "align-16k", "align-32k", "align-64k", "align-128k", "clippy"] }
default = alloc

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

alloc default
align-1k align-2k?
align-2k align-4k? = align-1k
align-4k align-8k? = align-2k
align-8k align-16k? = align-4k
align-16k align-32k? = align-8k
align-32k align-64k? = align-16k
align-64k align-128k? = align-32k
align-128k = align-64k

Maligned has 11 features without comments.