LL | | };
| |_____^ help: try this: `mut_owned.as_mut()`
-error: aborting due to 2 previous errors
+error: use as_ref() instead
+ --> $DIR/match_as_ref.rs:30:13
+ |
+LL | / match self.source {
+LL | | Some(ref s) => Some(s),
+LL | | None => None,
+LL | | }
+ | |_____________^ help: try this: `self.source.as_ref().map(|x| x as _)`
+
+error: aborting due to 3 previous errors