Intermittent failure in /resource-timing/test_resource_timing.https.html, /resource-timing/test_resource_timing.html

[jdm]

  ▶ Unexpected subtest result in /resource-timing/test_resource_timing.https.html:
  │ FAIL [expected PASS] PerformanceEntry has correct name, initiatorType, startTime, and duration (img)
  │   → assert_equals: expected 16429062.5 but got 16429062
  │ 
  │ resource_load/<@https://web-platform.test:8443/resource-timing/test_resource_timing.js:181:22
  │ Test.prototype.step@https://web-platform.test:8443/resources/testharness.js:2001:25
  │ resource_load@https://web-platform.test:8443/resource-timing/test_resource_timing.js:174:23
  └ onload/element.onload</<@https://web-platform.test:8443/resource-timing/test_resource_timing.js:118:34

  ▶ Unexpected subtest result in /resource-timing/test_resource_timing.html:
  │ FAIL [expected PASS] PerformanceEntry has correct name, initiatorType, startTime, and duration (img)
  │   → assert_equals: expected 12302789.5 but got 12302790
  │ 
  │ resource_load/<@http://web-platform.test:8000/resource-timing/test_resource_timing.js:181:22
  │ Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2001:25
  │ resource_load@http://web-platform.test:8000/resource-timing/test_resource_timing.js:174:23
  └ onload/element.onload</<@http://web-platform.test:8000/resource-timing/test_resource_timing.js:118:34