91             object_downcast: object_downcast::<E>,  in from_std()
115             object_downcast: object_downcast::<M>,  in from_adhoc()
140             object_downcast: object_downcast::<M>,  in from_display()
167             object_downcast: context_downcast::<C, E>,  in from_context()
192             object_downcast: object_downcast::<Box<dyn StdError + Send + Sync>>,  in from_boxed()
302             object_downcast: context_chain_downcast::<C>,  in context()
417             let addr = match (vtable(inner.ptr).object_downcast)(inner.by_ref(), target) {  in downcast()
485             let addr = (vtable(self.inner.ptr).object_downcast)(self.inner.by_ref(), target)?;  in downcast_ref()
502                 (vtable(self.inner.ptr).object_downcast)(self.inner.by_ref(), target)?.by_mut();  in downcast_mut()
569     object_downcast: unsafe fn(Ref<ErrorImpl>, TypeId) -> Option<Ref<()>>,  field
634 unsafe fn object_downcast<E>(e: Ref<ErrorImpl>, target: TypeId) -> Option<Ref<()>>  in object_downcast()  function
751         (vtable(source.inner.ptr).object_downcast)(source.inner.by_ref(), target)  in context_chain_downcast()