error[E0040]: explicit use of destructor method
  --> $DIR/explicit-call-to-supertrait-dtor.rs:22:14
   |
LL |         self.drop();
   |              ^^^^ explicit destructor calls not allowed
   |
help: consider using `drop` function
   |
LL |         drop(self);
   |         +++++    ~

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0040`.