Cargo Features

[dependencies]
async-bincode = { version = "0.7.2", default-features = false, features = ["futures", "tokio"] }
default = tokio

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

futures = futures-io

Affects async-bincode::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.

futures-io futures?
tokio default

Affects async-bincode::tokio