error[E0502]: cannot borrow `u.y` as immutable because `u.x.0` is also borrowed as mutable
  --> $DIR/union-borrow-move-parent-sibling.rs:15:14
   |
LL |     let a = &mut u.x.0;
   |                  ----- mutable borrow occurs here
LL |     let b = &u.y;
   |              ^^^ immutable borrow occurs here
LL |     use_borrow(a);
LL | }
   | - mutable borrow ends here

error[E0382]: use of moved value: `u.y`
  --> $DIR/union-borrow-move-parent-sibling.rs:22:9
   |
LL |     let a = u.x.0;
   |         - value moved here
LL |     let b = u.y;
   |         ^ value used here after move
   |
   = note: move occurs because `u.y` has type `[type error]`, which does not implement the `Copy` trait

error[E0502]: cannot borrow `u.y` as immutable because `u.x.0.0` is also borrowed as mutable
  --> $DIR/union-borrow-move-parent-sibling.rs:28:14
   |
LL |     let a = &mut (u.x.0).0;
   |                  --------- mutable borrow occurs here
LL |     let b = &u.y;
   |              ^^^ immutable borrow occurs here
LL |     use_borrow(a);
LL | }
   | - mutable borrow ends here

error[E0382]: use of moved value: `u.y`
  --> $DIR/union-borrow-move-parent-sibling.rs:35:9
   |
LL |     let a = (u.x.0).0;
   |         - value moved here
LL |     let b = u.y;
   |         ^ value used here after move
   |
   = note: move occurs because `u.y` has type `[type error]`, which does not implement the `Copy` trait

error[E0502]: cannot borrow `u` (via `u.x`) as immutable because `u` is also borrowed as mutable (via `*u.y`)
  --> $DIR/union-borrow-move-parent-sibling.rs:41:14
   |
LL |     let a = &mut *u.y;
   |                  ---- mutable borrow occurs here (via `*u.y`)
LL |     let b = &u.x;
   |              ^^^ immutable borrow of `u.x` -- which overlaps with `*u.y` -- occurs here
LL |     use_borrow(a);
LL | }
   | - mutable borrow ends here

error[E0382]: use of moved value: `u.x`
  --> $DIR/union-borrow-move-parent-sibling.rs:48:9
   |
LL |     let a = *u.y;
   |         - value moved here
LL |     let b = u.x;
   |         ^ value used here after move
   |
   = note: move occurs because `u.x` has type `[type error]`, which does not implement the `Copy` trait

error: aborting due to 6 previous errors

Some errors have detailed explanations: E0382, E0502.
For more information about an error, try `rustc --explain E0382`.