error[E0597]: `v` does not live long enough
  --> $DIR/borrowed-universal-error-2.rs:16:5
   |
LL |     &v
   |     ^^ borrowed value does not live long enough
LL |     //~^ ERROR `v` does not live long enough [E0597]
LL | }
   | - `v` dropped here while still borrowed
   |
note: borrowed value must be valid for the lifetime 'a as defined on the function body at 14:8...
  --> $DIR/borrowed-universal-error-2.rs:14:8
   |
LL | fn foo<'a>(x: &'a (u32,)) -> &'a u32 {
   |        ^^

error: aborting due to previous error

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