#[cfg(feature = "std")]
fn main() {
    let (sender, receiver) = oneshot::channel();
    assert!(sender.send(19i128).is_ok());
    assert_eq!(receiver.recv(), Ok(19i128));
}

#[cfg(not(feature = "std"))]
fn main() {
    panic!("This example is only for when the \"sync\" feature is used");
}