https://chromium-review.googlesource.com/c/558774 was a successful run (although see  issue 739341 ) but was not landed because:

Traceback (most recent call last):
  File "/mnt/data/b/rr/tmpYChX_g/w/src/third_party/WebKit/Tools/Scripts/wpt-import", line 18, in <module>
    host.exit(importer.main())
  File "/mnt/data/b/rr/tmpYChX_g/w/src/third_party/WebKit/Tools/Scripts/webkitpy/w3c/test_importer.py", line 112, in main
    commit_successful = self.do_auto_update()
  File "/mnt/data/b/rr/tmpYChX_g/w/src/third_party/WebKit/Tools/Scripts/webkitpy/w3c/test_importer.py", line 363, in do_auto_update
    self.git_cl.run(['upload', '--send-mail'])  # Turn off WIP mode.
  File "/mnt/data/b/rr/tmpYChX_g/w/src/third_party/WebKit/Tools/Scripts/webkitpy/common/net/git_cl.py", line 51, in run
    return self._host.executive.run_command(command, cwd=self._cwd)
  File "/mnt/data/b/rr/tmpYChX_g/w/src/third_party/WebKit/Tools/Scripts/webkitpy/common/system/executive.py", line 339, in run_command
    (error_handler or self.default_error_handler)(script_error)
  File "/mnt/data/b/rr/tmpYChX_g/w/src/third_party/WebKit/Tools/Scripts/webkitpy/common/system/executive.py", line 247, in default_error_handler
    raise error
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

It looks like the git cl upload --send-mail script was expecting user input, and failed because of that.

Is there some other way to change the WIP bit on Gerrit?