1error[E0119]: conflicting implementations of trait `cxx::memory::UniquePtrTarget` for type `here::C` 2 --> $DIR/unique_ptr_twice.rs:16:5 3 | 47 | impl UniquePtr<C> {} 5 | ----------------- first implementation here 6... 716 | impl UniquePtr<C> {} 8 | ^^^^^^^^^^^^^^^^^ conflicting implementation for `here::C` 9