error: lifetime may not live long enough --> $DIR/error-handling.rs:22:16 | LL | fn foo<'a, 'b, 'c>(x: &'static i32, mut y: &'a i32) -> E<'b, 'c> { | -- -- lifetime `'b` defined here | | | lifetime `'a` defined here ... LL | let _: &'b i32 = *u.0; | ^^^^^^^ type annotation requires that `'a` must outlive `'b` | = help: consider adding the following bound: `'a: 'b` error: aborting due to 1 previous error