This is a testharness.js-based test.
[FAIL] Capturing and bubbling events delivered to listeners in the expected order
  assert_array_equals: expected property 1 to be "capturing SerialPort" but got "bubbling SerialPort" (expected array ["capturing Serial", "capturing SerialPort", "bubbling SerialPort", "bubbling Serial"] got ["capturing Serial", "bubbling SerialPort", "capturing SerialPort", "bubbling Serial"])
Harness: the test ran to completion.