src/test/ui/minus-string.stderr

   1 error[E0600]: cannot apply unary operator `-` to type `std::string::String`
   2   --> $DIR/minus-string.rs:3:13
   3    |
   4 LL | fn main() { -"foo".to_string(); }
   5    |             ^^^^^^^^^^^^^^^^^^ cannot apply unary operator `-`
   6    |
   7    = note: an implementation of `std::ops::Neg` might be missing for `std::string::String`
   8
   9 error: aborting due to previous error
  10
  11 For more information about this error, try `rustc --explain E0600`.