Cargo Features

lz_fnv has no features set by default.

[dependencies]
lz_fnv = { version = "0.1.2", features = ["nightly", "u128"] }
nightly
u128 = extprim, extprim_literals

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.

extprim u128?
extprim_literals u128?