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// check-pass
#![warn(unused_must_use)]
#![feature(never_type)]
use std::ops::Add;
use std::ops::Sub;
use std::ops::Mul;
use std::ops::Div;
use std::ops::Rem;
fn main() {
let x = 2_u32;
(x.add(4), x.sub(4), x.mul(4), x.div(4), x.rem(4));
x.add(4); //~ WARN unused return value of `add` that must be used
x.sub(4); //~ WARN unused return value of `sub` that must be used
x.mul(4); //~ WARN unused return value of `mul` that must be used
x.div(4); //~ WARN unused return value of `div` that must be used
x.rem(4); //~ WARN unused return value of `rem` that must be used
println!("{}", x);
}
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