[Findit] Catch ValueError when get swarming result.

appengine/findit/model/wf_analysis.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 from google.appengine.ext import ndb
 
 from common import constants
 from common.waterfall import failure_type
 from model.base_build_model import BaseBuildModel
 from model import analysis_status
@@ skipping 87 matching lines @@
         result_status.FOUND_CORRECT_DUPLICATE,
         result_status.FOUND_INCORRECT_DUPLICATE)
 
   def Reset(self):  # pragma: no cover
     """Resets to the state as if no analysis is run."""
     self.pipeline_status_path = None
     self.status = analysis_status.PENDING
     self.request_time = None
     self.start_time = None
     self.end_time = None
+    self.failure_result_map = self.failure_result_map or {}
 
   @property
   def failure_type(self):
     if self.build_failure_type is not None:
       return self.build_failure_type
 
     # Legacy data don't have property ``build_failure_type``.
     if not self.result:
       return failure_type.UNKNOWN
 
@@ skipping 49 matching lines @@
   culprit_cls = ndb.JsonProperty(indexed=False, compressed=True)
   # Conclusion of analysis result for the build failure: 'Found' or 'Not Found'.
   result_status = ndb.IntegerProperty(indexed=True)
   # Record the history of triage.
   triage_history = ndb.JsonProperty(indexed=False, compressed=True)
   # An optional reference to the analysis that might have caused this analysis
   # to be marked as a duplicate.
   triage_reference_analysis_master_name = ndb.StringProperty(indexed=False)
   triage_reference_analysis_builder_name = ndb.StringProperty(indexed=False)
   triage_reference_analysis_build_number = ndb.IntegerProperty(indexed=False)