error[E0596]: cannot borrow `*self.s` as mutable, as it is behind a `&` reference | |
--> $DIR/issue-38147-1.rs:17:9 | |
| | |
LL | fn f(&self) { | |
| ----- help: consider changing this to be a mutable reference: `&mut self` | |
LL | self.s.push('x'); | |
| ^^^^^^ `self` is a `&` reference, so the data it refers to cannot be borrowed as mutable | |
error: aborting due to previous error | |
For more information about this error, try `rustc --explain E0596`. |