Cargo Features

GcAdapter has no features set by default.

[dependencies]
gc-adapter = { version = "0.1.2", features = ["libusb"] }
libusb = rusb

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.

rusb libusb?

Enables rusb ^0.6