error[E0506]: cannot assign to `v[_]` because it is borrowed
  --> $DIR/drop-no-may-dangle.rs:18:9
   |
LL |     let p: WrapMayNotDangle<&usize> = WrapMayNotDangle { value: &v[0] };
   |                                                                 ----- `v[_]` is borrowed here
...
LL |         v[0] += 1;
   |         ^^^^^^^^^ `v[_]` is assigned to here but it was already borrowed
...
LL | }
   | - borrow might be used here, when `p` is dropped and runs the `Drop` code for type `WrapMayNotDangle`

error[E0506]: cannot assign to `v[_]` because it is borrowed
  --> $DIR/drop-no-may-dangle.rs:21:5
   |
LL |     let p: WrapMayNotDangle<&usize> = WrapMayNotDangle { value: &v[0] };
   |                                                                 ----- `v[_]` is borrowed here
...
LL |     v[0] += 1;
   |     ^^^^^^^^^ `v[_]` is assigned to here but it was already borrowed
LL | }
   | - borrow might be used here, when `p` is dropped and runs the `Drop` code for type `WrapMayNotDangle`

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0506`.