"explicit destructor calls not allowed" error message

[stanislav-tkach]

Many of rustc errors contain a hint on how to fix them, but not this one. For example:

9 |     s.drop();
  |       ^^^^ explicit destructor calls not allowed

I suppose the error message can be more friendly by suggesting to use drop(s) instead of s.drop().

[stanislav-tkach]

I would like to try to address this issue.