error[E0597]: `x` does not live long enough
  --> $DIR/issue-29106.rs:16:26
   |
LL |         let (y, x);
   |                 - binding `x` declared here
LL |         x = "alive".to_string();
LL |         y = Arc::new(Foo(&x));
   |                          ^^ borrowed value does not live long enough
LL |     }
   |     -
   |     |
   |     `x` dropped here while still borrowed
   |     borrow might be used here, when `y` is dropped and runs the `Drop` code for type `Arc`
   |
   = note: values in a scope are dropped in the opposite order they are defined

error[E0597]: `x` does not live long enough
  --> $DIR/issue-29106.rs:23:25
   |
LL |         let (y, x);
   |                 - binding `x` declared here
LL |         x = "alive".to_string();
LL |         y = Rc::new(Foo(&x));
   |                         ^^ borrowed value does not live long enough
LL |     }
   |     -
   |     |
   |     `x` dropped here while still borrowed
   |     borrow might be used here, when `y` is dropped and runs the `Drop` code for type `Rc`
   |
   = note: values in a scope are dropped in the opposite order they are defined

error: aborting due to 2 previous errors

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