error[E0493]: destructors cannot be evaluated at compile-time
  --> $DIR/const_let.rs:16:32
   |
LL | const Y: FakeNeedsDrop = { let mut x = FakeNeedsDrop; x = FakeNeedsDrop; x };
   |                                ^^^^^ constants cannot evaluate destructors

error[E0493]: destructors cannot be evaluated at compile-time
  --> $DIR/const_let.rs:20:33
   |
LL | const Y2: FakeNeedsDrop = { let mut x; x = FakeNeedsDrop; x = FakeNeedsDrop; x };
   |                                 ^^^^^ constants cannot evaluate destructors

error[E0493]: destructors cannot be evaluated at compile-time
  --> $DIR/const_let.rs:24:21
   |
LL | const Z: () = { let mut x = None; x = Some(FakeNeedsDrop); };
   |                     ^^^^^ constants cannot evaluate destructors

error[E0493]: destructors cannot be evaluated at compile-time
  --> $DIR/const_let.rs:28:22
   |
LL | const Z2: () = { let mut x; x = None; x = Some(FakeNeedsDrop); };
   |                      ^^^^^ constants cannot evaluate destructors

error: aborting due to 4 previous errors

For more information about this error, try `rustc --explain E0493`.