1 error[E0499]: cannot borrow `*s` as mutable more than once at a time
2 --> $DIR/issue-18566.rs:23:19
5 | - ^- first borrow ends here
7 | | second mutable borrow occurs here
8 | first mutable borrow occurs here
10 error: aborting due to previous error
12 For more information about this error, try `rustc --explain E0499`.