Cargo Features

[dependencies]
base65536 = { version = "1.0.1", default-features = false, features = ["nightly", "fnv"] }
default = fnv

The fnv feature is set by default whenever base65536 is added without default-features = false somewhere in the dependency tree.

nightly

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.

fnv default