| error[E0501]: cannot borrow `x` as immutable because previous closure requires unique access |
| --> $DIR/yield-while-ref-reborrowed.rs:36:20 |
| | |
| LL | let mut b = || { |
| | -- generator construction occurs here |
| LL | let a = &mut *x; |
| | - first borrow occurs due to use of `x` in generator |
| ... |
| LL | println!("{}", x); |
| | ^ second borrow occurs here |
| LL | Pin::new(&mut b).resume(); |
| | ------ first borrow later used here |
| |
| error: aborting due to previous error |
| |
| For more information about this error, try `rustc --explain E0501`. |