src/test/ui/error-codes/e0119/issue-28981.stderr

   1 error[E0119]: conflicting implementations of trait `std::ops::Deref` for type `&_`:
   2   --> $DIR/issue-28981.rs:5:1
   3    |
   4 LL | impl<Foo> Deref for Foo { }
   5    | ^^^^^^^^^^^^^^^^^^^^^^^
   6    |
   7    = note: conflicting implementation in crate `core`:
   8            - impl<T> std::ops::Deref for &T
   9              where T: ?Sized;
  10
  11 error[E0210]: type parameter `Foo` must be used as the type parameter for some local type (e.g., `MyStruct<Foo>`)
  12   --> $DIR/issue-28981.rs:5:6
  13    |
  14 LL | impl<Foo> Deref for Foo { }
  15    |      ^^^ type parameter `Foo` must be used as the type parameter for some local type
  16    |
  17    = note: implementing a foreign trait is only possible if at least one of the types for which is it implemented is local
  18    = note: only traits defined in the current crate can be implemented for a type parameter
  19
  20 error: aborting due to 2 previous errors
  21
  22 Some errors have detailed explanations: E0119, E0210.
  23 For more information about an error, try `rustc --explain E0119`.