Cargo Features

ena has no features set by default.

[dependencies]
ena = { version = "0.14.3", features = ["persistent", "bench"] }
persistent = dogged

Affects backing_vec::Persistent, unify::PersistentUnificationTable

bench

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.

dogged persistent?