Most recent wpt-import is failing.

Most recent review: https://chromium-review.googlesource.com/c/558774/

Log dog has the following two traces:
webkitpy.common.system.executive.ScriptError: Failed to run "['git', 'cl', 'upload', '--send-mail']" exit_code: 1
output: Last 500 characters of output:
.py", line 4904, in CMDupload
    return cl.CMDUpload(options, args, orig_args)
  File "/mnt/data/b/depot_tools/git_cl.py", line 1657, in CMDUpload
    ret = self.CMDUploadChange(options, git_diff_args, custom_cl_base, change)
  File "/mnt/data/b/depot_tools/git_cl.py", line 2908, in CMDUploadChange
    'Title for patchset [%s]: ' % default_title) or default_title
  File "/mnt/data/b/depot_tools/git_cl.py", line 184, in ask_for_data
    return raw_input(prompt)
EOFError: EOF when reading a line
step returned non-zero exit code: 1

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INFO:remote_run:Command ['/mnt/data/b/.remote_run_cipd/kitchen', '-log-level', 'info', 'cook', '-mode', 'buildbot', '-output-result-json', '/mnt/data/b/rr/tmpYChX_g/kitchen_result.json', '-properties-file', '/mnt/data/b/rr/tmpYChX_g/remote_run_properties.json', '-recipe', 'wpt_import', '-repository', 'https://chromium.googlesource.com/infra/infra', '-cache-dir', '/mnt/data/b/c', '-temp-dir', '/mnt/data/b/rr/tmpYChX_g/t', '-checkout-dir', '/mnt/data/b/rr/tmpYChX_g/rw', '-workdir', '/mnt/data/b/rr/tmpYChX_g/w', '-revision', 'refs/heads/master', '-logdog-only', '-logdog-annotation-url', 'logdog://luci-logdog.appspot.com/chromium/bb/chromium.infra.cron/wpt-importer/269/+/recipes/annotations', '-logdog-tag', 'buildbot.master=chromium.infra.cron', '-logdog-tag', 'buildbot.builder=wpt-importer', '-logdog-tag', 'buildbot.buildnumber=269', '-logdog-tag', u'logdog.viewer_url=https://luci-milo.appspot.com/buildbot/chromium.infra.cron/wpt-importer/269'] finished with exit code 1.
WARNING:remote_run:Cleanup directory does not exist: '/mnt/data/b/build/slave/wpt-importer/build.dead'
INFO:remote_run:Command ['/usr/bin/python', '../../../scripts/slave/remote_run.py', '--repository', 'https://chromium.googlesource.com/infra/infra', '--revision', 'refs/heads/master', '--recipe', 'wpt_import', '--build-properties-gz=eNpVj80OgjAQhN+lZ7GAxgg3n8N4KG0Nq90Wty3GGN/dhWDU48x8sz9P0TmF1kFMoj2eVqIj5XUvWoEqJkuCnQzOWPKMsX0fUgE4BPoJfcaOVVvvmtXSW2jdU0DIuAZ/JrXWFDyXBgoXq3mhYEF2CBFSoMdH37LlEebAQLVtmnqzL8tyCkaIwANmLOremuymtX83Fd+AIadGu5wyYlVWBVZs3wNdDUxNiT5Jo5KSnZxfkXNF/n35egMp12OB', '--factory-properties-gz=eNo9jEEKAyEMAP+S87Le/YxIiBq6mhAjy1L69wqFXuYwDPMGzd4SyihcIcKLHRsNOMAIWWmrWz1xVzH/22SkMtnFnh00d50xBGwmnVc/q0i9aMoypBOlBx7F8o/7sSalys47gVjyNenzBQrZMas='] finished with exit code 1.
program finished with exit code 1
elapsedTime=11312.344937

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Reason: https://luci-logdog.appspot.com/v/?s=chromium%2Fbb%2Fchromium.infra.cron%2Fwpt-importer%2F269%2F%2B%2Frecipes%2Fsteps%2FFailure_reason%2F0%2Flogs%2Freason%2F0