Cargo Features

dataloader = { version = "0.17.0", default-features = false, features = ["runtime-async-std", "runtime-tokio"] }
default = runtime-async-std

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

runtime-async-std default = async-std

Affects runtime::Arc, runtime::Mutex

runtime-tokio = tokio

Affects runtime::Arc, runtime::Mutex

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.

async-std runtime-async-std
tokio runtime-tokio?