1 error[E0502]: cannot borrow `my_stuff` as mutable because it is also borrowed as immutable
2 --> $DIR/hashmap-iter-value-lifetime.rs:7:5
4 LL | let (_, thing) = my_stuff.iter().next().unwrap();
5 | --------------- immutable borrow occurs here
8 | ^^^^^^^^^^^^^^^^ mutable borrow occurs here
10 LL | println!("{}", *thing);
11 | ------ immutable borrow later used here
13 error: aborting due to previous error
15 For more information about this error, try `rustc --explain E0502`.