▶ Unexpected subtest result in /html/browsers/history/the-history-interface/001.html:
  │ FAIL [expected PASS] pushState should not actually load the new URL
  │   → assert_true: expected true got undefined
  │ 
  │ tests12/<@http://web-platform.test:8000/html/browsers/history/the-history-interface/001.html:283:13
  │ Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:1402:20
  │ test@http://web-platform.test:8000/resources/testharness.js:500:9
  └ tests12@http://web-platform.test:8000/html/browsers/history/the-history-interface/001.html:282:9