#![allow(unused_variables)]
#![feature(allocator_api)]
fn main() {
    fn _inner() -> core::result::Result<(), impl core::fmt::Debug> {
        use std::alloc::System;
        let five = Box::try_new_in(5, System)?;
        Ok::<(), std::alloc::AllocError>(())
    }
    _inner().unwrap()
}