fan reaction test failure

Hardware:
CID 201507-18697 Dell Latitude E5570
CID 201506-18555 Dell Vostro 3559

Ubuntu Bionic
Linux 201507-18697-one-flea 4.15.0-67-generic #76-Ubuntu SMP Mon Oct 21 18:44:29 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

[Steps to Reproduce]

Run ./fan_reaction_test.py on the local machine

[Expected Result]

Fan test completes

[Actual Result]

Found 4 CPU(s) in the system
Will use #4 thread(s)
Precooling for 10s - no stress load
Measuring baseline fan speed
Traceback (most recent call last):
  File "/tmp/nest-k6qycbam.288a56d39bfcf02a81ad359cb8fd51a824e0055b750c639c57f72fd069d74849/fan_reaction_test.py", line 154, in <module>
    main()
  File "/tmp/nest-k6qycbam.288a56d39bfcf02a81ad359cb8fd51a824e0055b750c639c57f72fd069d74849/fan_reaction_test.py", line 100, in main
    baseline_rpm = fan_mon.get_average_rpm(5)
  File "/tmp/nest-k6qycbam.288a56d39bfcf02a81ad359cb8fd51a824e0055b750c639c57f72fd069d74849/fan_reaction_test.py", line 45, in get_average_rpm
    acc = self.get_rpm()
  File "/tmp/nest-k6qycbam.288a56d39bfcf02a81ad359cb8fd51a824e0055b750c639c57f72fd069d74849/fan_reaction_test.py", line 42, in get_rpm
    result[fan_mon_name] = int(f.read())
OSError: [Errno 19] No such device

[More Information]

$ dpkg -l '*checkbox*' '*plainbox*'
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-===================================================-==============================-==============================-============================================================================================================
ii checkbox-ng 1.5.0~ppa~ubuntu18.04.1 all CheckBoxNG test runner
un plainbox <none> <none> (no description available)
ii plainbox-provider-checkbox 0.49.0~ppa~ubuntu18.04.1 amd64 CheckBox provider for PlainBox
ii plainbox-provider-resource-generic 0.41.0~ppa~ubuntu18.04.1 amd64 CheckBox generic resource jobs provider
ii plainbox-provider-sru 1.14.0~ppa~ubuntu18.04.1 all CheckBox SRU jobs provider
ii python3-checkbox-ng 1.5.0~ppa~ubuntu18.04.1 all CheckBoxNG test runner (Python 3 library)
ii python3-checkbox-support 0.42.0~ppa~ubuntu18.04.1 all collection of Python modules used by PlainBox providers
un python3-plainbox <none> <none> (no description available)