Cargo Features

[dependencies]
async-rt = { version = "0.1.5", default-features = false, features = ["threadpool", "tokio"] }
default = tokio

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

threadpool

Enables thread-pool of futures

Affects rt::threadpool

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.

tokio not wasm32 default

Affects rt::tokio