+error[E0004]: non-exhaustive patterns: `(A, Some(A))`, `(A, Some(B))`, `(B, Some(B))` and 2 more not covered
+ --> $DIR/issue-72377.rs:8:11
+ |
+LL | match (x, y) {
+ | ^^^^^^ patterns `(A, Some(A))`, `(A, Some(B))`, `(B, Some(B))` and 2 more not covered
+ |
+ = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+ = note: the matched value is of type `(X, Option<X>)`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0004`.