1 error[E0506]: cannot assign to `self.container_field` because it is borrowed
2 --> $DIR/issue-81365-6.rs:18:9
4 LL | let first = &self[0];
5 | ---- borrow of `self.container_field` occurs here
6 LL | self.container_field = true;
7 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.container_field` occurs here
9 | ----- borrow later used here
11 = note: borrow occurs due to deref coercion to `[()]`
12 note: deref defined here
13 --> $DIR/issue-81365-6.rs:9:5
15 LL | type Target = [()];
18 error: aborting due to previous error
20 For more information about this error, try `rustc --explain E0506`.