// edition:2018 #![feature(arbitrary_self_types)] #![allow(non_snake_case)] use std::pin::Pin; struct Struct { } impl Struct { // Test using `&Struct` explicitly: async fn ref_Struct(self: &Struct, f: &u32) -> &u32 { f //~^ ERROR lifetime mismatch } async fn box_ref_Struct(self: Box<&Struct>, f: &u32) -> &u32 { f //~^ ERROR lifetime mismatch } async fn pin_ref_Struct(self: Pin<&Struct>, f: &u32) -> &u32 { f //~^ ERROR lifetime mismatch } async fn box_box_ref_Struct(self: Box>, f: &u32) -> &u32 { f //~^ ERROR lifetime mismatch } async fn box_pin_Struct(self: Box>, f: &u32) -> &u32 { f //~^ ERROR lifetime mismatch } } fn main() { }