error: cannot find macro `mob` in this scope
  --> tests/compile-fail/wrong_macro.rs:14:20
   |
14 |             Symbol(mob!(* s)) => {},
   |                    ^^^

warning: unreachable pattern
  --> tests/compile-fail/wrong_macro.rs:15:13
   |
15 |             _ => panic!(),
   |             ^ no value can reach this
   |
note: multiple earlier patterns match some of the same values
  --> tests/compile-fail/wrong_macro.rs:15:13
   |
12 |             Nil => {},
   |             --- matches some of the same values
13 |             Cons(_, _) => {},
   |             ---------- matches some of the same values
14 |             Symbol(mob!(* s)) => {},
   |             ----------------- matches some of the same values
15 |             _ => panic!(),
   |             ^ collectively making this unreachable
   = note: `#[warn(unreachable_patterns)]` on by default