/// If a payment fails to send, it can be in one of several states. This enum is returned as the
/// Err() type describing which state the payment is in, see the description of individual enum
/// states for more.
-#[derive(Debug)]
+#[derive(Clone, Debug)]
pub enum PaymentSendFailure {
/// A parameter which was passed to send_payment was invalid, preventing us from attempting to
/// send the payment at all. No channel state has been changed or messages sent to peers, and