Cargo Features

tls-parser = { version = "0.11.0", default-features = false, features = ["std", "serialize", "unstable"] }
default = std

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

std default
serialize = cookie-factory

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.