error: lifetime may not live long enough --> $DIR/issue-74497-lifetime-in-opaque.rs:18:21 | LL | let _ = foo(|x| bar(x)); | -- ^^^^^^ returning this value requires that `'1` must outlive `'2` | || | |return type of closure `impl Future` contains a lifetime `'2` | has type `&'1 u8` error: aborting due to 1 previous error