Cargo Features

[dependencies]
apple-app-store-receipts = { version = "0.3.1", default-features = false, features = ["with-base64"] }
default = with-base64

The with-base64 feature is set by default whenever apple-app-store-receipts is added without default-features = false somewhere in the dependency tree.

with-base64 default = base64

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.

base64 with-base64

Enables base64 ^0.21