ERROR [expected TIMEOUT] /css/css-sizing/responsive-iframe/responsive-iframe-alloworigins.html?container=subdomain,origin=same,allowed=wildcard,expect=400
│ → window.__wptrunner_process_next_event is not a function
│ → Traceback (most recent call last):
│ → File "/home/runner/work/servo/servo/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorwebdriver.py", line 1210, in run_func
│ → self.result = True, self.func(self.protocol, self.url, self.timeout)
│ → ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
│ → File "/home/runner/work/servo/servo/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorwebdriver.py", line 1307, in do_testharness
│ → raw_results = protocol.testdriver.run(url, self.script_resume, test_window)
│ → ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
│ → File "/home/runner/work/servo/servo/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorwebdriver.py", line 691, in run
│ → test_driver_message = self.get_next_message(url, script_resume, test_window)
│ → ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
│ → File "/home/runner/work/servo/servo/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorwebdriver.py", line 735, in get_next_message
│ → return self._get_next_message_classic(url, script_resume)
│ → ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
│ → File "/home/runner/work/servo/servo/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorwebdriver.py", line 742, in _get_next_message_classic
│ → return self.parent.base.execute_script(script_resume, asynchronous=True, args=[strip_server(url)])
│ → ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
│ → File "/home/runner/work/servo/servo/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorwebdriver.py", line 82, in execute_script
│ → return method(script, args=args)
│ → ^^^^^^^^^^^^^^^^^^^^^^^^^
│ → File "/home/runner/work/servo/servo/tests/wpt/tests/tools/webdriver/webdriver/client.py", line 782, in execute_async_script
│ → return self.send_session_command("POST", "execute/async", body)
│ → ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
│ → File "/home/runner/work/servo/servo/tests/wpt/tests/tools/webdriver/webdriver/client.py", line 652, in send_session_command
│ → return self.send_command(method, url, body, timeout)
│ → ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
│ → File "/home/runner/work/servo/servo/tests/wpt/tests/tools/webdriver/webdriver/client.py", line 607, in send_command
│ → raise err
│ → webdriver.error.JavascriptErrorException: javascript error (500): window.__wptrunner_process_next_event is not a function
│ →
│ → Remote-end stacktrace:
│ →
│ → result</<@:9:8
│ → result<@:11:25
│ → @:3:34
└ → @:23:15