Crate pcitool

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// Use first available access method
let access = Access::init().unwrap();
// First device
let zero = access.device("00:00.0".parse().unwrap());
// Fail if no device on "0000:00:00.0" address
assert!(zero.is_ok());
// Iterator through devices
let devices = access.iter();
// More than one device are in the system
assert!(devices.count() > 1);

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