Cargo Features

[dependencies]
zbar-rs = { version = "0.2.7", default-features = false, features = ["from_image", "zbar_fork_if_available"] }
default = from_image, zbar_fork_if_available

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

from_image default = image

Affects image::from_image

zbar_fork_if_available default

There is a fork of zbar that is more activly developed (https://github.com/procxx/zbar)

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.

image from_image

Enables image ^0.19.0