message: Cleanup expect function call
diff: @@ -85,14 +85,14 @@ impl<T> Index<usize> for BoundedSlice<T> {
  type Output = T;
  fn index(&self, index: usize) -> &T {
  self.get(index)
  - .expect(&format!("index: {} was out of bounds.", index))
  + .unwrap_or_else(|| panic!("index: {} was out of bounds.", index))
  }
  }
  impl<T> IndexMut<usize> for BoundedSlice<T> {
  fn index_mut(&mut self, index: usize) -> &mut T {
  self.get_mut(index)
  - .expect(&format!("index: {} was out of bounds.", index))
  + .unwrap_or_else(|| panic!("index: {} was out of bounds.", index))
  }
  }
  