Cargo Features

Pixelmatch has no features set by default.

[dependencies]
pixelmatch = { version = "0.1.0", features = ["build-binary"] }
build-binary = structopt

Required by the binary

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.

structopt build-binary?