Cargo Features

[dependencies]
memcache-async = { version = "0.9.0", default-features = false, features = ["with-futures", "with-tokio"] }
default = with-futures

The with-futures feature is set by default whenever memcache-async is added without default-features = false somewhere in the dependency tree.

with-futures default
with-tokio

memcache-async has 3 features without comments.