error[E0597]: `x` does not live long enough
  --> $DIR/issue-68550.rs:12:20
   |
LL | fn run<'a, A>(x: A)
   |        --     - binding `x` declared here
   |        |
   |        lifetime `'a` defined here
...
LL |     let _: &'a A = &x;
   |            -----   ^^ borrowed value does not live long enough
   |            |
   |            type annotation requires that `x` is borrowed for `'a`
LL | }
   | - `x` dropped here while still borrowed

error: aborting due to previous error

For more information about this error, try `rustc --explain E0597`.