error: not automatically applying `DerefMut` on `ManuallyDrop` union field
  --> $DIR/union-deref.rs:17:14
   |
LL |     unsafe { u.f.0 = Vec::new() };
   |              ^^^
   |
   = help: writing to this reference calls the destructor for the old value
   = help: add an explicit `*` if that is desired, or call `ptr::write` to not run the destructor

error: not automatically applying `DerefMut` on `ManuallyDrop` union field
  --> $DIR/union-deref.rs:19:19
   |
LL |     unsafe { &mut u.f.0 };
   |                   ^^^
   |
   = help: writing to this reference calls the destructor for the old value
   = help: add an explicit `*` if that is desired, or call `ptr::write` to not run the destructor

error: not automatically applying `DerefMut` on `ManuallyDrop` union field
  --> $DIR/union-deref.rs:21:14
   |
LL |     unsafe { u.f.0.push(0) };
   |              ^^^
   |
   = help: writing to this reference calls the destructor for the old value
   = help: add an explicit `*` if that is desired, or call `ptr::write` to not run the destructor

error: not automatically applying `DerefMut` on `ManuallyDrop` union field
  --> $DIR/union-deref.rs:25:14
   |
LL |     unsafe { u.f.0.0 = Vec::new() };
   |              ^^^^^
   |
   = help: writing to this reference calls the destructor for the old value
   = help: add an explicit `*` if that is desired, or call `ptr::write` to not run the destructor

error: not automatically applying `DerefMut` on `ManuallyDrop` union field
  --> $DIR/union-deref.rs:27:19
   |
LL |     unsafe { &mut u.f.0.0 };
   |                   ^^^^^
   |
   = help: writing to this reference calls the destructor for the old value
   = help: add an explicit `*` if that is desired, or call `ptr::write` to not run the destructor

error: not automatically applying `DerefMut` on `ManuallyDrop` union field
  --> $DIR/union-deref.rs:29:14
   |
LL |     unsafe { u.f.0.0.push(0) };
   |              ^^^^^
   |
   = help: writing to this reference calls the destructor for the old value
   = help: add an explicit `*` if that is desired, or call `ptr::write` to not run the destructor

error: aborting due to 6 previous errors