error[E0308]: mismatched types
  --> $DIR/call-fn-never-arg-wrong-type.rs:20:9
   |
LL |     foo("wow"); //~ ERROR mismatched types
   |         ^^^^^ expected !, found reference
   |
   = note: expected type `!`
              found type `&'static str`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0308`.