error[E0080]: evaluation of constant value failed
  --> $DIR/const-unwrap.rs:7:18
   |
LL | const BAR: i32 = Option::<i32>::None.unwrap();
   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the evaluated program panicked at 'called `Option::unwrap()` on a `None` value', $DIR/const-unwrap.rs:7:38

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0080`.