Note: help and version output are generated by a naïve script which tries a few variants of
<command> --help, <command> -h etc. to find the command's help and version info.
Sometimes it gets lucky, sometimes it doesn't; if the output below looks wrong, it probably is.
linux-boot-prober --version (return code: 0)
unshare failed: Operation not permitted
linux-boot-prober --help (return code: 0)
unshare failed: Operation not permitted