More than one mountpoint below /org/piuparts.debian.org/tmp detected! proc /org/piuparts.debian.org/tmp/tmpE5Gs40/proc proc rw,relatime 0 0 sysfs /org/piuparts.debian.org/tmp/tmpE5Gs40/sys sysfs rw,relatime 0 0 Zero or one mountpoint is normal for piuparts operation, more is not. Please investigate and cleanup.