Cargo Features

[dependencies]
puzz-server = { version = "0.1.0", default-features = false, features = ["actix"] }
default = actix

The actix feature is set by default whenever puzz-server is added without default-features = false somewhere in the dependency tree.

actix default = actix-http, actix-server, actix-service

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.

actix-http actix
actix-server actix
actix-service actix