The short build stage does not report failures if something failed in prep for shellcheck

[jimklimov]

[2022-08-25T17:43:07.110Z] + [ -x ./autogen.sh ]
[2022-08-25T17:43:07.110Z] + ./autogen.sh
[2022-08-25T17:43:07.110Z] Regenerating Augeas ups.conf lens with 'python'...
[2022-08-25T17:43:07.856Z] Regenerating the USB helper files...
[2022-08-25T17:43:07.856Z] Calling autoreconf...
[2022-08-25T17:43:07.856Z] Provide an AUTOCONF_VERSION environment variable, please
[2022-08-25T17:43:07.856Z] + exit
script returned exit code 127

GitHub did report failed stages, but Jenkins said the build was green. BlueOcean had the failed substage though:
https://ci.networkupstools.org/blue/organizations/jenkins/nut%2Fnut/detail/PR-1617/7/pipeline/246