Siteshwar Vashisht

Please note that we only use open source analyzers (no Coverity or Snyk) in the public instance of OpenScanHub, so the [scan results](https://openscanhub.fedoraproject.org/task/61837/) may vary from internal instance.

> [@siteshwar](https://github.com/siteshwar) this should be another issue, i guess. this is not related to the tbuf issue we're discussing here. I am only referencing that the `tbuf` issue was found...

I understand this pull request is in draft state, but I got this [warning](https://openscanhub.fedoraproject.org/task/21458/log/added.html) on OpenScanHub: ``` Error: SHELLCHECK_WARNING ([CWE-398](https://cwe.mitre.org/data/definitions/398.html)): [[#def1]](https://openscanhub.fedoraproject.org/task/21458/log/added.html#def1) /usr/share/buildah/test/system/helpers.bash:211:24: warning[[SC2115](https://github.com/koalaman/shellcheck/wiki/SC2115)]: Use "${var:?}" to ensure this never expands...