1 error[E0596]: cannot borrow `data` as mutable, as it is not declared as mutable
2 --> $DIR/issue-61187.rs:6:5
4 LL | async fn response(data: Vec<u8>) {
5 | ---- help: consider changing this to be mutable: `mut data`
7 | ^^^^^^^^^^^^^^ cannot borrow as mutable
9 error: aborting due to previous error
11 For more information about this error, try `rustc --explain E0596`.