| error[E0502]: cannot borrow `foo` as mutable because it is also borrowed as immutable |
| --> $DIR/borrowck-issue-49631.rs:30:9 |
| | |
| LL | while let Some(Ok(string)) = foo.get() { |
| | --- immutable borrow occurs here |
| LL | foo.mutate(); |
| | ^^^^^^^^^^^^ mutable borrow occurs here |
| LL | //~^ ERROR cannot borrow `foo` as mutable |
| LL | println!("foo={:?}", *string); |
| | ------- immutable borrow used here, in later iteration of loop |
| |
| error: aborting due to previous error |
| |
| For more information about this error, try `rustc --explain E0502`. |
