Program: 33720
Project: 33720
Buggy source:
@Override protected APIResponse.CODE doInBackground(String... params){
  eventKey=params[0];
  teams=new ArrayList<>();
  try {
    APIResponse<JsonObject> response=DataManager.Events.getDistrictPointsForEvent(activity,eventKey,forceFromCache);
    APIResponse<Event> eventResponse=DataManager.Events.getEventBasic(activity,eventKey,forceFromCache);
    JsonObject points=response.getData();
    if (isCancelled()) {
      return APIResponse.CODE.NODATA;
    }
    String districtKey=null;
    try {
      DistrictHelper.DISTRICTS type=DistrictHelper.DISTRICTS.fromEnum(eventResponse.getData().getDistrictEnum());
      isDistrict=type != DistrictHelper.DISTRICTS.NO_DISTRICT;
      if (isDistrict) {
        districtKey=eventKey.substring(0,4) + type.getAbbreviation();
      }
    }
 catch (    BasicModel.FieldNotDefinedException e) {
      isDistrict=false;
      Log.w(Constants.LOG_TAG,"String_Node_Str");
    }
    teams=new ArrayList<>();
    ArrayList<DistrictPointBreakdown> pointBreakdowns=new ArrayList<>();
    for (    Map.Entry<String,JsonElement> teamPoints : points.entrySet()) {
      Team team=DataManager.Teams.getTeamFromDB(activity,teamPoints.getKey());
      DistrictPointBreakdown b=JSONManager.getGson().fromJson(teamPoints.getValue(),DistrictPointBreakdown.class);
      b.setTeamKey(teamPoints.getKey());
      b.setTeamName(team.getNickname());
      b.setDistrictKey(districtKey);
      pointBreakdowns.add(b);
    }
    Collections.sort(pointBreakdowns,new PointBreakdownComparater());
    for (int i=0; i < pointBreakdowns.size(); i++) {
      pointBreakdowns.get(i).setRank(i + 1);
      teams.add(pointBreakdowns.get(i).render());
    }
    return APIResponse.mergeCodes(response.getCode(),eventResponse.getCode());
  }
 catch (  DataManager.NoDataException e) {
    Log.w(Constants.LOG_TAG,"String_Node_Str");
    return APIResponse.CODE.NODATA;
  }
}

Fixed version (ground truth):
@Override protected APIResponse.CODE doInBackground(String... params){
  eventKey=params[0];
  teams=new ArrayList<>();
  try {
    APIResponse<JsonObject> response=DataManager.Events.getDistrictPointsForEvent(activity,eventKey,forceFromCache);
    APIResponse<Event> eventResponse=DataManager.Events.getEventBasic(activity,eventKey,forceFromCache);
    JsonObject points=response.getData();
    if (isCancelled()) {
      return APIResponse.CODE.NODATA;
    }
    String districtKey=null;
    try {
      DistrictHelper.DISTRICTS type=DistrictHelper.DISTRICTS.fromEnum(eventResponse.getData().getDistrictEnum());
      isDistrict=type != DistrictHelper.DISTRICTS.NO_DISTRICT;
      if (isDistrict) {
        districtKey=eventKey.substring(0,4) + type.getAbbreviation();
      }
    }
 catch (    BasicModel.FieldNotDefinedException e) {
      isDistrict=false;
      Log.w(Constants.LOG_TAG,"String_Node_Str");
    }
    teams=new ArrayList<>();
    ArrayList<DistrictPointBreakdown> pointBreakdowns=new ArrayList<>();
    for (    Map.Entry<String,JsonElement> teamPoints : points.entrySet()) {
      Team team=DataManager.Teams.getTeamFromDB(activity,teamPoints.getKey());
      DistrictPointBreakdown b=JSONManager.getGson().fromJson(teamPoints.getValue(),DistrictPointBreakdown.class);
      b.setTeamKey(teamPoints.getKey());
      b.setTeamName(team != null ? team.getNickname() : "String_Node_Str" + teamPoints.getKey().substring(3));
      b.setDistrictKey(districtKey);
      pointBreakdowns.add(b);
    }
    Collections.sort(pointBreakdowns,new PointBreakdownComparater());
    for (int i=0; i < pointBreakdowns.size(); i++) {
      pointBreakdowns.get(i).setRank(i + 1);
      teams.add(pointBreakdowns.get(i).render());
    }
    return APIResponse.mergeCodes(response.getCode(),eventResponse.getCode());
  }
 catch (  DataManager.NoDataException e) {
    Log.w(Constants.LOG_TAG,"String_Node_Str");
    return APIResponse.CODE.NODATA;
  }
}