Intermittent error in /webaudio/the-audio-api/the-audiocontext-interface/audiocontext-suspend-resume.html

[jdm]

  ▶ ERROR [expected TIMEOUT] /webaudio/the-audio-api/the-audiocontext-interface/audiocontext-suspend-resume.html
  │   → Unhandled rejection: offlineContext.suspend is not a function
  │ 
  └ @http://web-platform.test:8000/webaudio/the-audio-api/the-audiocontext-interface/audiocontext-suspend-resume.html:111:37
  ▶ Unexpected subtest result in /webaudio/the-audio-api/the-audiocontext-interface/audiocontext-suspend-resume.html:
  │ FAIL [expected PASS] X After close, offlineContext.state is not equal to closed. Got running.
  │   → assert_true: expected true got false
  │ 
  │ _logFailed/<@http://web-platform.test:8000/webaudio/resources/audit.js:50:7
  │ Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2024:25
  │ test@http://web-platform.test:8000/resources/testharness.js:548:30
  │ _logFailed@http://web-platform.test:8000/webaudio/resources/audit.js:49:5
  │ _finalize@http://web-platform.test:8000/webaudio/resources/audit.js:215:9
  │ _assert@http://web-platform.test:8000/webaudio/resources/audit.js:228:12
  │ beEqualTo@http://web-platform.test:8000/webaudio/resources/audit.js:491:19
  └ @http://web-platform.test:8000/webaudio/the-audio-api/the-audiocontext-interface/audiocontext-suspend-resume.html:108:20