Cargo Features

Tough has no features set by default.

[dependencies]
tough = { version = "0.16.0", features = ["http", "integ"] }
http = reqwest

Affects tough::http

integ

The integ feature enables integration tests. These tests require noxious-server to be installed on the host.

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features.

reqwest http?