Forgot to update some test outputs

Author: Nadrieril

src/test/ui/error-codes/E0004-2.stderr

@@ -1,8 +1,8 @@
-error[E0004]: non-exhaustive patterns: multiple patterns of type `std::option::Option<i32>` are not handled
+error[E0004]: non-exhaustive patterns: `None` and `Some(_)` not covered
   --> $DIR/E0004-2.rs:4:11
    |
 LL |     match x { }
-   |           ^
+   |           ^ patterns `None` and `Some(_)` not covered
    |
    = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
 

src/test/ui/issues/issue-3601.stderr

@@ -1,8 +1,8 @@
-error[E0004]: non-exhaustive patterns: `_` not covered
+error[E0004]: non-exhaustive patterns: `Box(_)` not covered
   --> $DIR/issue-3601.rs:30:44
    |
 LL |         box NodeKind::Element(ed) => match ed.kind {
-   |                                            ^^^^^^^ pattern `_` not covered
+   |                                            ^^^^^^^ pattern `Box(_)` not covered
    |
    = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
 

src/test/ui/uninhabited/uninhabited-matches-feature-gated.stderr

@@ -9,6 +9,9 @@ LL |     let _ = match x {
 error[E0004]: non-exhaustive patterns: type `&Void` is non-empty
   --> $DIR/uninhabited-matches-feature-gated.rs:12:19
    |
+LL | enum Void {}
+   | ------------ `Void` defined here
+...
 LL |     let _ = match x {};
    |                   ^
    |