Cargo Features

[dependencies]
channel_pipes = { version = "0.2.0", default-features = false, features = ["crossbeam", "futures"] }
default = crossbeam

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

crossbeam default = crossbeam-channel
mpsc bus flume futures

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.

crossbeam-channel crossbeam