src/test/ui/borrowck/issue-85581.stderr

   1 error[E0499]: cannot borrow `*heap` as mutable more than once at a time
   2   --> $DIR/issue-85581.rs:9:22
   3    |
   4 LL |     match heap.peek_mut() {
   5    |           ---------------
   6    |           |
   7    |           first mutable borrow occurs here
   8    |           a temporary with access to the first borrow is created here ...
   9 LL |         Some(_) => { heap.pop(); },
  10    |                      ^^^^ second mutable borrow occurs here
  11 ...
  12 LL | }
  13    | - ... and the first borrow might be used here, when that temporary is dropped and runs the destructor for type `Option<PeekMut<'_, i32>>`
  14
  15 error: aborting due to previous error
  16
  17 For more information about this error, try `rustc --explain E0499`.