   "message": "promise_test: Unhandled rejection with value: object \"Error: This error is expected\"",
            "name": "failing promise test with cleanup #2",
            "properties": {},
            "status_string": "FAIL"
        },
        {
            "message": "promise_test: Unhandled rejection with value: object \"Error: This error is expected\"",
            "name": "failing promise test without cleanup #1",
            "properties": {},
            "status_string": "FAIL"
        },
        