Cargo Features

[dependencies]
dir-signature = { version = "0.2.9", default-features = false, features = ["threads"] }
default = threads

The threads feature is set by default whenever dir-signature is added without default-features = false somewhere in the dependency tree.

threads default = futures, futures-cpupool, num_cpus

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.

num_cpus threads
futures threads

Enables futures ^0.1.21

futures-cpupool threads