message: Get rid of a GCC 9 warning about deprecated generation of copy ctors.
  A bunch of these have been cleaned up a while ago, but since we don't
  have GCC 9 CI yet, we've missed two new cases added by the recent change
  to support Feta.
diff: @@ -245,6 +245,10 @@ struct transform_input_iterator_t
  transform_input_iterator_t(InputIt input, UnaryOp op)
  : input(input), op(op) {}
  +#if THRUST_CPP_DIALECT >= 2011
  + transform_input_iterator_t(const self_t &) = default;
  +#endif
  +
  // UnaryOp might not be copy assignable, such as when it is a lambda. Define
  // an explicit copy assignment operator that doesn't try to assign it.
  self_t& operator=(const self_t& o)
  @@ -371,6 +375,10 @@ struct transform_pair_of_input_iterators_t
  BinaryOp op_)
  : input1(input1_), input2(input2_), op(op_) {}
  +#if THRUST_CPP_DIALECT >= 2011
  + transform_pair_of_input_iterators_t(const self_t &) = default;
  +#endif
  +
  // BinaryOp might not be copy assignable, such as when it is a lambda.
  // Define an explicit copy assignment operator that doesn't try to assign it.
  self_t& operator=(const self_t& o)
  