error[E0009]: cannot bind by-move and by-ref in the same pattern
  --> $DIR/borrowck-pat-by-move-and-ref.rs:5:34
   |
LL |         ref op_string_ref @ Some(s) => {},
   |         -------------------------^-
   |         |                        |
   |         |                        by-move pattern here
   |         by-ref pattern here

error: aborting due to previous error

For more information about this error, try `rustc --explain E0009`.