Observed in https://stainless.corp.google.com/browse/chromeos-image-archive/betty-arcnext-pre-cq/R72-11268.0.0-b3139604/vm_test_results_2/smoke/test_harness/results-03-cheets_CTS_P.9.0_r4.x86.CtsAdminTestCases/

where tradefed_test.py has a bug in the exception handling code:

11/16 15:04:59.048 DEBUG|              test:0611| Running cleanup for test.
11/16 15:04:59.048 DEBUG|             utils:0219| Running 'adb -s 'localhost:9228' kill-server'
11/16 15:04:59.071 ERROR|              test:0614| Ignoring exception during cleanup() phase:
11/16 15:04:59.072 ERROR|         traceback:0013| Traceback (most recent call last):
11/16 15:04:59.072 ERROR|         traceback:0013|   File "/build/betty-arcnext/usr/local/build/autotest/client/common_lib/test.py", line 612, in _exec
11/16 15:04:59.073 ERROR|         traceback:0013|     _cherry_pick_call(self.cleanup, *args, **dargs)
11/16 15:04:59.073 ERROR|         traceback:0013|   File "/build/betty-arcnext/usr/local/build/autotest/client/common_lib/test.py", line 715, in _cherry_pick_call
11/16 15:04:59.074 ERROR|         traceback:0013|     return func(*p_args, **p_dargs)
11/16 15:04:59.074 ERROR|         traceback:0013|   File "/build/betty-arcnext/usr/local/build/autotest/server/cros/tradefed_test.py", line 156, in cleanup
11/16 15:04:59.075 ERROR|         traceback:0013|     except (CmdError, AttributeError):
11/16 15:04:59.075 ERROR|         traceback:0013| NameError: global name 'CmdError' is not defined
11/16 15:04:59.075 ERROR|              test:0618| Now raising the earlier <class 'autotest_lib.client.common_lib.error.AutoservRunError'> error
11/16 15:04:59.077 DEBUG|   logging_manager:0627| Logging subprocess finished
11/16 15:04:59.082 DEBUG|   logging_manager:0627| Logging subprocess finished