2 Checks for explicit `deref()` or `deref_mut()` method calls.
5 Dereferencing by `&*x` or `&mut *x` is clearer and more concise,
6 when not part of a method chain.
11 let a: &mut String = &mut String::from("foo");
12 let b: &str = a.deref();
17 let a: &mut String = &mut String::from("foo");
23 let _ = d.unwrap().deref();