| error[E0502]: cannot borrow `my_stuff` as mutable because it is also borrowed as immutable | |
| --> $DIR/hashmap-lifetimes.rs:6:5 | |
| | | |
| LL | let mut it = my_stuff.iter(); | |
| | -------- immutable borrow occurs here | |
| LL | my_stuff.insert(1, 43); | |
| | ^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here | |
| LL | it; | |
| | -- immutable borrow later used here | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0502`. |