There are new test failures on [Update to latest package:json_rpc_2](https://github.com/dart-lang/sdk/commit/abe95fdf84d95e73f6c5971f618d053c04eb589d). The tests ``` service/external_service_notification_invocation_test/dds RuntimeError (expected Pass) ``` are failing on configurations ``` dartkp-win-release-x64 ``` log: https://logs.chromium.org/logs/dart/buildbucket/cr-buildbucket.appspot.com/8872333091123864224/+/steps/test_results/0/logs/new_test_failures__logs_/0