#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(hint_must_use)]
use core::fmt;
pub struct Error();
#[macro_export]
macro_rules! make_error {
    ($($args:expr),*) => {
        core::hint::must_use({ let error =
        $crate::make_error(core::format_args!($($args),*)); error })
    };
}
#[doc(hidden)]
pub fn make_error(args: fmt::Arguments<'_>) -> Error {
    Error()
}
fn demo() -> Option<Error> {
    if true {
        Some(make_error!("..."));
    }
    None
}
fn main() {}