Lib.rs

Cargo Features

[dependencies]
backoff-tower = { version = "0.1.6", default-features = false, features = ["tokio", "async_std"] }

default = tokio

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

tokio default

Enables tokio

async_std

Enables async-io ^1.13

backoff-tower has 3 features without comments.