error[E0503]: cannot use `e` because it was mutably borrowed
  --> $DIR/borrowed-match-issue-45045.rs:24:5
   |
22 |       let f = &mut e;
   |               ------ borrow of `e` occurs here
23 |       let g = f;
24 | /     match e { //~ cannot use `e` because it was mutably borrowed [E0503]
25 | |         Xyz::A => println!("a"),
26 | |         //~^ cannot use `e` because it was mutably borrowed [E0503]
27 | |         Xyz::B => println!("b"),
28 | |     };
   | |_____^ use of borrowed `e`

error[E0503]: cannot use `e` because it was mutably borrowed
  --> $DIR/borrowed-match-issue-45045.rs:25:9
   |
22 |     let f = &mut e;
   |             ------ borrow of `e` occurs here
...
25 |         Xyz::A => println!("a"),
   |         ^^^^^^ use of borrowed `e`

error: aborting due to 2 previous errors

If you want more information on this error, try using "rustc --explain E0503"