src/test/ui/generator/yield-while-ref-reborrowed.stderr

   1 error[E0501]: cannot borrow `x` as immutable because previous closure requires unique access
   2   --> $DIR/yield-while-ref-reborrowed.rs:36:20
   3    |
   4 LL |     let mut b = || {
   5    |                 -- generator construction occurs here
   6 LL |         let a = &mut *x;
   7    |                      -- first borrow occurs due to use of `x` in generator
   8 ...
   9 LL |     println!("{}", x);
  10    |                    ^ second borrow occurs here
  11 LL |     Pin::new(&mut b).resume(());
  12    |              ------ first borrow later used here
  13    |
  14    = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
  15
  16 error: aborting due to previous error
  17
  18 For more information about this error, try `rustc --explain E0501`.