/usr/share/man/man6/jumpnbump.fbcon.6.gz is in jumpnbump 1.51+dfsg1-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man6/jumpnbump.6.gz
/usr/share/man/man6/jumpnbump.6.gz