Imports are currently blocked: https://ci.chromium.org/buildbot/chromium.infra.cron/wpt-importer/10254

2018-01-17 03:21:32,469 - Importing wpt@d5566dc52e0fc93255e373be97be2af6a27672e2 to Chromium 4bd9c8e6e51dfe55296d4c30ea965fc6c3c7f7b5
Traceback (most recent call last):
  File "/mnt/data/b/rr/tmpe1A38l/w/src/third_party/WebKit/Tools/Scripts/wpt-import", line 24, in <module>
    main()
  File "/mnt/data/b/rr/tmpe1A38l/w/src/third_party/WebKit/Tools/Scripts/wpt-import", line 17, in main
    host.exit(importer.main())
  File "/mnt/data/b/rr/tmpe1A38l/w/src/third_party/WebKit/Tools/Scripts/webkitpy/w3c/test_importer.py", line 117, in main
    commits = self.apply_exportable_commits_locally(local_wpt)
  File "/mnt/data/b/rr/tmpe1A38l/w/src/third_party/WebKit/Tools/Scripts/webkitpy/w3c/test_importer.py", line 311, in apply_exportable_commits_locally
    commits = self.exportable_but_not_exported_commits(local_wpt)
  File "/mnt/data/b/rr/tmpe1A38l/w/src/third_party/WebKit/Tools/Scripts/webkitpy/w3c/test_importer.py", line 342, in exportable_but_not_exported_commits
    self.host, local_wpt, self.wpt_github, require_clean=False, verify_merged_pr=True)
  File "/mnt/data/b/rr/tmpe1A38l/w/src/third_party/WebKit/Tools/Scripts/webkitpy/w3c/chromium_exportable_commits.py", line 47, in exportable_commits_over_last_n_commits
    return _exportable_commits_since(start_commit, host, local_wpt, wpt_github, require_clean, verify_merged_pr)
  File "/mnt/data/b/rr/tmpe1A38l/w/src/third_party/WebKit/Tools/Scripts/webkitpy/w3c/chromium_exportable_commits.py", line 73, in _exportable_commits_since
    state, error = get_commit_export_state(commit, local_wpt, wpt_github, verify_merged_pr)
  File "/mnt/data/b/rr/tmpe1A38l/w/src/third_party/WebKit/Tools/Scripts/webkitpy/w3c/chromium_exportable_commits.py", line 110, in get_commit_export_state
    if _is_commit_exported(chromium_commit, local_wpt, wpt_github, verify_merged_pr):
  File "/mnt/data/b/rr/tmpe1A38l/w/src/third_party/WebKit/Tools/Scripts/webkitpy/w3c/chromium_exportable_commits.py", line 118, in _is_commit_exported
    pull_request = wpt_github.pr_for_chromium_commit(chromium_commit)
  File "/mnt/data/b/rr/tmpe1A38l/w/src/third_party/WebKit/Tools/Scripts/webkitpy/w3c/wpt_github.py", line 316, in pr_for_chromium_commit
    pull_request = self.pr_with_change_id(chromium_commit.change_id())
  File "/mnt/data/b/rr/tmpe1A38l/w/src/third_party/WebKit/Tools/Scripts/webkitpy/w3c/wpt_github.py", line 328, in pr_with_change_id
    for pull_request in self.all_pull_requests():
  File "/mnt/data/b/rr/tmpe1A38l/w/src/third_party/WebKit/Tools/Scripts/webkitpy/common/memoized.py", line 45, in __call__
    result = self._function(*args)
  File "/mnt/data/b/rr/tmpe1A38l/w/src/third_party/WebKit/Tools/Scripts/webkitpy/w3c/wpt_github.py", line 213, in all_pull_requests
    response = self.request(path, method='GET')
  File "/mnt/data/b/rr/tmpe1A38l/w/src/third_party/WebKit/Tools/Scripts/webkitpy/w3c/wpt_github.py", line 67, in request
    headers=headers
  File "/mnt/data/b/rr/tmpe1A38l/w/src/third_party/WebKit/Tools/Scripts/webkitpy/common/net/web.py", line 49, in request
    return opener.open(request)
  File "/mnt/data/b/cipd_path_tools/lib/python2.7/urllib2.py", line 435, in open
    response = meth(req, response)
  File "/mnt/data/b/cipd_path_tools/lib/python2.7/urllib2.py", line 548, in http_response
    'http', request, response, code, msg, hdrs)
  File "/mnt/data/b/cipd_path_tools/lib/python2.7/urllib2.py", line 473, in error
    return self._call_chain(*args)
  File "/mnt/data/b/cipd_path_tools/lib/python2.7/urllib2.py", line 407, in _call_chain
    result = func(*args)
  File "/mnt/data/b/cipd_path_tools/lib/python2.7/urllib2.py", line 556, in http_error_default
    raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
urllib2.HTTPError: HTTP Error 422: Unprocessable Entity

With some debugging, I can see that the problem is when the code looking for exportable commits is querying GitHub. Specifically,

    https://api.github.com/search/issues?q=repo%3Aw3c%2Fweb-platform-tests+type%3Apr+label%3Achromium-export&page=11&per_page=100

causes GitHub to return the following with an HTTP 422 response:

    {"message":"Only the first 1000 search results are available","documentation_url":"https://developer.github.com/v3/search/"}