code: def failed_event(self, fail_time, fail_trace):
      self.run_entry["stop_time"] = fail_time.isoformat()
      self.run_entry["status"] = "FAILED"
      self.run_entry["fail_trace"] = fail_trace
      self.save_json(self.run_entry, "run.json")
      self.render_template()
  
imports: import json
  import os
  import os.path
  from pathlib import Path
  from typing import Optional
  import warnings
  from shutil import copyfile, SameFileError
  from sacred.commandline_options import cli_option
  from sacred.dependencies import get_digest
  from sacred.observers.base import RunObserver
  from sacred import optional
  from sacred.serializer import flatten
  from sacred.utils import PathType
label_desc: Use image node_id 19 for calling the FileStorageObserver obj's underlying member method code with example usage: obj.failed_event(fail_time, fail_trace) without return types