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fn hi() -> impl Sized { std::ptr::null::<u8>() }
fn main() {
let b: Box<dyn Fn() -> Box<u8>> = Box::new(hi);
//~^ ERROR type mismatch resolving `<fn() -> impl Sized {hi} as FnOnce<()>>::Output == Box<u8>`
let boxed = b();
let null = *boxed;
println!("{null:?}");
}
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