Cargo Features

[dependencies]
diff-struct = { version = "0.5.3", default-features = false, features = ["impl_num"] }
default = impl_num

The impl_num feature is set by default whenever diff-struct is added without default-features = false somewhere in the dependency tree.

impl_num default = num

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.

num impl_num