fix: error on &mut x when x is not mutable
#1392
| Job | Run time |
|---|---|
| 2m 50s | |
| 31s | |
| 3m 21s |
&mut x when x is not mutable
#1392
| Job | Run time |
|---|---|
| 2m 50s | |
| 31s | |
| 3m 21s |