code: def on_trial_error(self, **info):
      self.state["trial_fail"] = info
  
imports: import os
  import shutil
  import sys
  import tempfile
  import time
  import unittest
  from unittest.mock import patch
  from collections import OrderedDict
  import ray
  from ray import tune
  from ray.air._internal.checkpoint_manager import _TrackedCheckpoint, CheckpointStorage
  from ray.air.constants import TRAINING_ITERATION
  from ray.rllib import _register_all
  from ray.tune.execution.ray_trial_executor import _ExecutorEvent, _ExecutorEventType, RayTrialExecutor
  from ray.tune.callback import warnings
  from ray.tune.experiment import Trial
  from ray.tune.execution.trial_runner import TrialRunner
  from ray.tune import Callback
  from ray.tune.experiment import Experiment
label_desc: Use image node_id 10 for calling the TestCallback obj's underlying member method code with example usage: obj.on_trial_error() without return types