Cargo Features

[dependencies]
here = { version = "1.1.1", default-features = false, features = ["std", "off_on_release", "log"] }
default = off_on_release, std

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

std default
off_on_release default

Features from optional dependencies

log implicit feature

Enables log

log:

A lightweight logging facade for Rust