In https://ci.chromium.org/buildbot/chromium.infra.cron/wpt-importer/21657 the import succeeded but the import notification step broke:

Traceback (most recent call last):
  File "/b/rr/tmp1rwdnB/w/src/third_party/blink/tools/wpt_import.py", line 27, in <module>
    main()
  File "/b/rr/tmp1rwdnB/w/src/third_party/blink/tools/wpt_import.py", line 20, in main
    host.exit(importer.main())
  File "/b/rr/tmp1rwdnB/w/src/third_party/blink/tools/blinkpy/w3c/test_importer.py", line 179, in main
    if not self.send_notifications(local_wpt, options.auto_file_bugs, options.monorail_auth_json):
  File "/b/rr/tmp1rwdnB/w/src/third_party/blink/tools/blinkpy/w3c/test_importer.py", line 654, in send_notifications
    dry_run=not auto_file_bugs, service_account_key_json=monorail_auth_json)
  File "/b/rr/tmp1rwdnB/w/src/third_party/blink/tools/blinkpy/w3c/import_notifier.py", line 72, in main
    bugs = self.create_bugs_from_new_failures(wpt_revision_start, wpt_revision_end, gerrit_url)
  File "/b/rr/tmp1rwdnB/w/src/third_party/blink/tools/blinkpy/w3c/import_notifier.py", line 193, in create_bugs_from_new_failures
    _log.info(str(bug))
  File "/b/rr/tmp1rwdnB/w/src/third_party/blink/tools/blinkpy/w3c/monorail.py", line 57, in __str__
    result += 'Description:\n{}\n'.format(self.body['description'])
UnicodeEncodeError: 'ascii' codec can't encode character u'\u2019' in position 8653: ordinal not in range(128)
step returned non-zero exit code: 1