Traceback (most recent call last):
  File "/usr/local/Cellar/jenkins-job-builder/2.3.0_1/libexec/bin/jenkins-jobs", line 10, in <module>
    sys.exit(main())
  File "/usr/local/Cellar/jenkins-job-builder/2.3.0_1/libexec/lib/python3.7/site-packages/jenkins_jobs/cli/entry.py", line 158, in main
    jjb.execute()
  File "/usr/local/Cellar/jenkins-job-builder/2.3.0_1/libexec/lib/python3.7/site-packages/jenkins_jobs/cli/entry.py", line 139, in execute
    ext.obj.execute(self.options, self.jjb_config)
  File "/usr/local/Cellar/jenkins-job-builder/2.3.0_1/libexec/lib/python3.7/site-packages/jenkins_jobs/cli/subcommand/update.py", line 135, in execute
    options, jjb_config)
  File "/usr/local/Cellar/jenkins-job-builder/2.3.0_1/libexec/lib/python3.7/site-packages/jenkins_jobs/cli/subcommand/update.py", line 112, in _generate_xmljobs
    registry, options.names)
  File "/usr/local/Cellar/jenkins-job-builder/2.3.0_1/libexec/lib/python3.7/site-packages/jenkins_jobs/parser.py", line 312, in expandYaml
    template = self._getJobTemplate(jobname)
  File "/usr/local/Cellar/jenkins-job-builder/2.3.0_1/libexec/lib/python3.7/site-packages/jenkins_jobs/parser.py", line 193, in _getJobTemplate
    return self._applyDefaults(job)
  File "/usr/local/Cellar/jenkins-job-builder/2.3.0_1/libexec/lib/python3.7/site-packages/jenkins_jobs/parser.py", line 201, in _applyDefaults
    {}).get(whichdefaults, {}))
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/copy.py", line 180, in deepcopy
    y = _reconstruct(x, memo, *rv)
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/copy.py", line 306, in _reconstruct
    value = deepcopy(value, memo)
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/copy.py", line 180, in deepcopy
    y = _reconstruct(x, memo, *rv)
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/copy.py", line 280, in _reconstruct
    state = deepcopy(state, memo)
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/copy.py", line 150, in deepcopy
    y = copier(x, memo)
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/copy.py", line 240, in _deepcopy_dict
    y[deepcopy(key, memo)] = deepcopy(value, memo)
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/copy.py", line 150, in deepcopy
    y = copier(x, memo)
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/copy.py", line 215, in _deepcopy_list
    append(deepcopy(a, memo))
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/copy.py", line 180, in deepcopy
    y = _reconstruct(x, memo, *rv)
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/copy.py", line 280, in _reconstruct
    state = deepcopy(state, memo)
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/copy.py", line 150, in deepcopy
    y = copier(x, memo)
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/copy.py", line 240, in _deepcopy_dict
    y[deepcopy(key, memo)] = deepcopy(value, memo)
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/copy.py", line 180, in deepcopy
    y = _reconstruct(x, memo, *rv)
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/copy.py", line 280, in _reconstruct
    state = deepcopy(state, memo)
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/copy.py", line 150, in deepcopy
    y = copier(x, memo)
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/copy.py", line 240, in _deepcopy_dict
    y[deepcopy(key, memo)] = deepcopy(value, memo)
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/copy.py", line 169, in deepcopy
    rv = reductor(4)
TypeError: cannot serialize '_io.BufferedReader' object