error[E0505]: cannot move out of `b` because it is borrowed
  --> $DIR/issue-27282-move-match-input-into-guard.rs:26:16
   |
LL |     match b {
   |           - borrow of `b` occurs here
LL |         &mut false => {},
LL |         _ if { (|| { let bar = b; *bar = false; })();
   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ move out of `b` occurs here
...
LL |         &mut true => { println!("You might think we should get here"); },
   |         --------- borrow later used here

error[E0382]: use of moved value: `*b`
  --> $DIR/issue-27282-move-match-input-into-guard.rs:29:14
   |
LL |         _ if { (|| { let bar = b; *bar = false; })();
   |                ----------------------------------- value moved here
...
LL |         &mut true => { println!("You might think we should get here"); },
   |              ^^^^ value used here after move

error: aborting due to 2 previous errors

Some errors occurred: E0382, E0505.
For more information about an error, try `rustc --explain E0382`.