Cargo Features

[dependencies]
knock = { version = "0.1.8", default-features = false, features = ["clippy", "native-tls"] }
default = native-tls

The native-tls feature is set by default whenever knock is added without default-features = false somewhere in the dependency tree.

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.

clippy implicit feature

Enables clippy ^0.0.134

clippy:

A bunch of helpful lints to avoid common pitfalls in Rust

native-tls default

Affects consts::DEF_SSL_PORT