Cargo Features

[dependencies]
ser-data-loadr = { version = "0.1.0", default-features = false, features = ["use_tokio"] }
default = use_tokio

The use_tokio feature is set by default whenever ser-data-loadr is added without default-features = false somewhere in the dependency tree.

use_tokio default = tokio

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 use_tokio