▶ Unexpected subtest result in /_mozilla/mozilla/getBoundingClientRect.html:
  │ FAIL [expected PASS] Untitled 1
  │   → assert_equals: expected 62 but got 60.35
  │ 
  │ test_rect@http://web-platform.test:8000/_mozilla/mozilla/getBoundingClientRect.html:59:7
  │ @http://web-platform.test:8000/_mozilla/mozilla/getBoundingClientRect.html:86:9
  │ Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:1406:20
  │ test@http://web-platform.test:8000/resources/testharness.js:497:9
  └ @http://web-platform.test:8000/_mozilla/mozilla/getBoundingClientRect.html:82:5