|  | error[E0506]: cannot assign to `self.outer_field` because it is borrowed | 
|  | --> $DIR/issue-81365-4.rs:33:9 | 
|  | | | 
|  | LL |         let first = &self.target_field; | 
|  | |                      ---- `self.outer_field` is borrowed here | 
|  | LL |         self.outer_field = true; | 
|  | |         ^^^^^^^^^^^^^^^^^^^^^^^ `self.outer_field` is assigned to here but it was already borrowed | 
|  | LL |         first; | 
|  | |         ----- borrow later used here | 
|  | | | 
|  | = note: borrow occurs due to deref coercion to `Container` | 
|  | note: deref defined here | 
|  | --> $DIR/issue-81365-4.rs:24:5 | 
|  | | | 
|  | LL |     type Target = Container; | 
|  | |     ^^^^^^^^^^^ | 
|  |  | 
|  | error: aborting due to 1 previous error | 
|  |  | 
|  | For more information about this error, try `rustc --explain E0506`. |