Cargo Features

[dependencies]
arc-reactor = { version = "0.2.4", default-features = false, features = ["unstable", "futures"] }
default = futures

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

unstable = futures-await, impl-service

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.

impl-service unstable?
futures default

Enables futures ^0.1

futures-await unstable?