src/test/ui/closures/2229_closure_analysis/diagnostics/union.stderr

   1 error[E0506]: cannot assign to `a.y` because it is borrowed
   2   --> $DIR/union.rs:20:5
   3    |
   4 LL |     let mut c = || {
   5    |                 -- borrow of `a.y` occurs here
   6 ...
   7 LL |         let _ = &mut a;
   8    |                      - borrow occurs due to use in closure
   9 ...
  10 LL |     a.y = 1;
  11    |     ^^^^^^^ assignment to borrowed `a.y` occurs here
  12 ...
  13 LL |     c();
  14    |     - borrow later used here
  15
  16 error: aborting due to previous error
  17
  18 For more information about this error, try `rustc --explain E0506`.