localhost.localdomain: linux-system-roles/ci-testing: pull #28 (009c1af) on centos-8
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+ git init --quiet /tmp/tmpk86zpm35
+ GIT_TERMINAL_PROMPT=0 git -C /tmp/tmpk86zpm35 fetch --quiet --depth=1 https://github.com/linux-system-roles/ci-testing pull/28/head
+ git -C /tmp/tmpk86zpm35 checkout --quiet FETCH_HEAD
Traceback (most recent call last):
  File "/home/nhosoi/linux-system-roles/test-harness/test/./run-tests", line 1223, in handle_task
    result = task.run(
  File "/home/nhosoi/linux-system-roles/test-harness/test/./run-tests", line 790, in run
    batch_file = self._gen_batch_file(
  File "/home/nhosoi/linux-system-roles/test-harness/test/./run-tests", line 531, in _gen_batch_file
    if role in ROLE_MODIFIED_FILES:
TypeError: unhashable type: 'list'