Cargo Features

[dependencies]
kiss-ftpd = { version = "1.0.0", default-features = false, features = ["env_logger"] }
default = env_logger

The env_logger feature is set by default whenever kiss-ftpd 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.

env_logger default

Enables env_logger ^0.8