small bug fixes for bad cl detector project

Modified fetch_data_engine.py to automatically create input folder for
data fetching.

Output unknown stage name in stage_feature_extractor.py.

BUG=chromium:746071
TEST=run unit and integration tests

Change-Id: I9f3a6ac53ff6e0e6dda83ee05195073cc35423c0
2 files changed
tree: ff0182973204a970775cc72b1499631b3337e32d
  1. bin/
  2. lib/
  3. model/
  4. appengine_config.py
  5. PRESUBMIT.cfg
  6. README.md
  7. runner.py
README.md

Copyright 2017 The Chromium OS Authors. All rights reserved.

Use of this source code is governed by a BSD-style license that can be

found in the LICENSE file.

Servie to detect if a given build failure is caused by bad CL.

TODO(quluman): finish this readme.