I'm seeing this sporadically on some shards, for isntance chromeos-server51, in scheduler or host-scheduler logs. Not yet sure how serious it is.

Not sure 

stderr:
Traceback (most recent call last):
  File "/usr/local/autotest/scheduler/drone_utility.py", line 23, in <module>
    from autotest_lib.scheduler import email_manager, scheduler_config
  File "/usr/local/autotest/scheduler/email_manager.py", line 13, in <module>
    from autotest_lib.site_utils  import gmail_lib
  File "/usr/local/autotest/site_utils/gmail_lib.py", line 41, in <module>
    from autotest_lib.server import utils as server_utils
  File "/usr/local/autotest/server/utils.py", line 14, in <module>
    from autotest_lib.server.site_utils import *
  File "/usr/local/autotest/server/site_utils.py", line 28, in <module>
    from chromite.lib import cros_build_lib
  File "/usr/local/autotest/site-packages/chromite/lib/cros_build_lib.py", line 399, in <module>
    append_to_file=False, chroot_args=None, debug_level=logging.INFO,
AttributeError: 'module' object has no attribute 'INFO'