https://uberchromegw.corp.google.com/i/chromeos/builders/tricky-chrome-pfq/builds/3223



@@@STEP_FAILURE@@@
16:41:49: ERROR: Traceback (most recent call last):
  File "/b/cbuild/repository/chromite/cbuildbot/stages/generic_stages.py", line 628, in Run
    self.PerformStage()
  File "/b/cbuild/repository/chromite/cbuildbot/stages/test_stages.py", line 416, in PerformStage
    ('Build', build_id, 'BuildStage', self._build_stage_id)})
  File "/b/cbuild/repository/chromite/lib/failures_lib.py", line 190, in wrapped_functor
    return functor(*args, **kwargs)
  File "/b/cbuild/repository/chromite/cbuildbot/commands.py", line 1059, in RunHWTestSuite
    json_dump_result = json.loads(s[i:j])
  File "/usr/lib/python2.7/json/__init__.py", line 338, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 366, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 384, in raw_decode
    raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded