Cargo Features

[dependencies]
mwc-libp2p-uds = { version = "0.27.1", default-features = false, features = ["tokio", "async-std"] }
default = async-std

The async-std feature is set by default whenever mwc-libp2p-uds is added without default-features = false somewhere in the dependency tree.

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 unix not emscripten implicit feature

Enables tokio

tokio:

An event-driven, non-blocking I/O platform for writing asynchronous I/O backed applications

async-std unix not emscripten default