Cargo Features

anyhow = { version = "1.0.75", default-features = false, features = ["std", "backtrace"] }
default = std

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

std default

Affects kind::Boxed, kind::BoxedKind, anyhow::Chain, wrapper::BoxedError

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features.

backtrace implicit feature

With default (std)