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

error[E0503]: cannot use `e` because it was mutably borrowed
  --> $DIR/borrowed-match-issue-45045.rs:25:9
   |
LL |     let f = &mut e;
   |             ------ borrow of `e` occurs here
...
LL |         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"