Cargo Features

[dependencies]
requests = { version = "0.0.30", default-features = false, features = ["ssl", "with_json"] }
default = ssl, with_json

These default features are set whenever requests is added without default-features = false somewhere in the dependency tree.

ssl default = hyper-native-tls
with_json default = json

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.

hyper-native-tls ssl

Enables hyper-native-tls ^0.2

json with_json

Enables json ^0.11