pyparsing.ParseException when running job audio/speaker-headphone-plug-detection on Ubuntu 20.04

[Summary]

[Steps to reproduce]

1. Run job audio/speaker-headphone-plug-detection on 20.04.

[Expected result]

1. Job completes

[Actual result]

1. it fails with the following logs:

Traceback (most recent call last):
  File "/tmp/nest-jy4vaoy3.44ccba4503553477bd35b7457239873165b3f38cb7624d3ed35a63828a1ba746/pulse-active-port-change", line 149, in <module>
    raise SystemExit(AudioPlugDetection.main())
  File "/tmp/nest-jy4vaoy3.44ccba4503553477bd35b7457239873165b3f38cb7624d3ed35a63828a1ba746/pulse-active-port-change", line 107, in main
    return cls(ns.timeout, ns.mode).run()
  File "/tmp/nest-jy4vaoy3.44ccba4503553477bd35b7457239873165b3f38cb7624d3ed35a63828a1ba746/pulse-active-port-change", line 120, in run
    initial_cfg = self.get_sound_config()
  File "/tmp/nest-jy4vaoy3.44ccba4503553477bd35b7457239873165b3f38cb7624d3ed35a63828a1ba746/pulse-active-port-change", line 71, in get_sound_config
    doc = parse_pactl_output(text)
  File "/usr/lib/python3/dist-packages/checkbox_support/parsers/pactl.py", line 592, in parse_pactl_output
    return Document.Syntax.parseString(output, parseAll=True)[0]
  File "/usr/lib/python3/dist-packages/pyparsing.py", line 1947, in parseString
    raise exc
  File "/usr/lib/python3/dist-packages/pyparsing.py", line 1941, in parseString
    se._parse(instring, loc)
  File "/usr/lib/python3/dist-packages/pyparsing.py", line 1838, in _parseCache
    value = self._parseNoCache(instring, loc, doActions, callPreParse)
  File "/usr/lib/python3/dist-packages/pyparsing.py", line 1677, in _parseNoCache
    loc, tokens = self.parseImpl(instring, preloc, doActions)
  File "/usr/lib/python3/dist-packages/pyparsing.py", line 4052, in parseImpl
    loc, exprtokens = e._parse(instring, loc, doActions)
  File "/usr/lib/python3/dist-packages/pyparsing.py", line 1838, in _parseCache
    value = self._parseNoCache(instring, loc, doActions, callPreParse)
  File "/usr/lib/python3/dist-packages/pyparsing.py", line 1681, in _parseNoCache
    loc, tokens = self.parseImpl(instring, preloc, doActions)
  File "/usr/lib/python3/dist-packages/pyparsing.py", line 3798, in parseImpl
    raise ParseException(instring, loc, self.errmsg, self)
pyparsing.ParseException: Expected end of text, found '\t' (at char 5920), (line:167, col:1)

[Failure rate]

5 times out of 5.

[Additional information]
SKU: 201911-27083
system-manufacturer: Dell Inc.
system-product-name: Vostro 5590
bios-version: 1.1.0
CPU: Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz (8x)
GPU: 00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:9b41] (rev 02)
01:00.0 3D controller [0302]: NVIDIA Corporation Device [10de:1d13] (rev a1)
kernel-version: 5.4.0-21-generic

checkbox-ng: 1.7.0
checkbox-support: 0.44.0
checkbox-provider-phoronix: 0.5.0
com.canonical.ce:oem: 1.0
certification-client: 0.39.0
plainbox-provider-checkbox: 0.51.0
plainbox-provider-resource-generic: 0.43.0
plainbox-provider-sru: 1.17.0
plainbox-provider-tpm2: 1.12.0