▶ Unexpected subtest result in /html/browsers/the-window-object/open-close/creating_browsing_context_test_01.html:
  │ FAIL [expected PASS] b'first argument: absolute url'
  │   → assert_equals: should be equal to result url expected "http://web-platform.test:8000/common/blank.html" but got "about:blank"
  │ 
  │ win.onload<@http://web-platform.test:8000/html/browsers/the-window-object/open-close/creating_browsing_context_test_01.html:15:18
  │ Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2590:25
  └ Test.prototype.step_func_done/<@http://web-platform.test:8000/resources/testharness.js:2665:32