Cargo Features

[dependencies]
rummage = { version = "0.2.0", default-features = false, features = ["git-version", "serde"] }
default = serde

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

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.

git-version implicit feature

Enables git-version

git-version:

Compile the git version (tag name, or hash otherwise) and dirty state into your program

serde default