middle_drop_check_overflow = overflow while adding drop-check rules for {$ty} .note = {$note} middle_opaque_hidden_type_mismatch = concrete type differs from previous defining opaque type use .label = expected `{$self_ty}`, got `{$other_ty}` middle_conflict_types = this expression supplies two conflicting concrete types for the same opaque type middle_previous_use_here = previous use here middle_limit_invalid = `limit` must be a non-negative integer .label = {$error_str}