Cargo Features

[dependencies]
argparsnip = { version = "0.1.6", default-features = false, features = ["no-std", "macros", "derive", "debug"] }
default = macros, std

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

no-std = hashbrown
std macros default
derive = serde
debug = log

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.

hashbrown no-std?

Enables hashbrown ^0.11.2

serde derive?
log debug?