tests/ui/error-codes/E0657.rs

   1 #![allow(warnings)]
   2
   3 trait Id<T> {}
   4 trait Lt<'a> {}
   5
   6 impl<'a> Lt<'a> for () {}
   7 impl<T> Id<T> for T {}
   8
   9 fn free_fn_capture_hrtb_in_impl_trait()
  10     -> Box<for<'a> Id<impl Lt<'a>>>
  11         //~^ ERROR `impl Trait` can only capture lifetimes bound at the fn or impl level [E0657]
  12 {
  13     Box::new(())
  14 }
  15
  16 struct Foo;
  17 impl Foo {
  18     fn impl_fn_capture_hrtb_in_impl_trait()
  19         -> Box<for<'a> Id<impl Lt<'a>>>
  20             //~^ ERROR `impl Trait` can only capture lifetimes bound at the fn or impl level
  21     {
  22         Box::new(())
  23     }
  24 }
  25
  26 fn main() {}