error: Expected HTTP status code (integer literal).

       Common status codes:
       - 400 Bad Request (for invalid input)
       - 404 Not Found (for missing resources)
       - 500 Internal Server Error

       Example:
       let user = ensure!(find_user(id), 404, "User not found");

       Original error: expected integer literal
 --> tests/ui/dx/ensure_missing_status.rs:7:38
  |
7 |     let _user = ensure!(find_user(), "User not found");
  |                                      ^^^^^^^^^^^^^^^^
