I have a rather new fc20 installation (about 4 or 5 weeks).
After installing some packages for dnf and hawkey, I thought I would rerun mandb to incorporate the new man pages into the db. Not sure why it belched these errors.
mandb: warning: /usr/share/man/man1/mjpegtools.1.gz: whatis parse for mjpegtools(1) failed mandb: warning: /usr/share/man/man1/config.sub.1.gz: whatis parse for config.sub(1) failed mandb: can't open /usr/share/man/man1/gnome-session.1: No such file or directory mandb: warning: /usr/share/man/man1/gnome-session-cinnamon2d.1.gz: bad symlink or ROFF `.so' request mandb: warning: /usr/share/man/man1/mprof-report.1.gz: whatis parse for mprof-report(1) failed mandb: warning: /usr/share/man/man1/inkscape.el.1.gz: whatis parse for inkscape.el(1) failed mandb: can't open /usr/share/man/man1/gnome-session.1: No such file or directory mandb: warning: /usr/share/man/man1/gnome-session-cinnamon.1.gz: bad symlink or ROFF `.so' request mandb: warning: /usr/share/man/man1/bison.1.gz: whatis parse for bison(1) failed mandb: warning: /usr/share/man/man1/config.guess.1.gz: whatis parse for config.guess(1) failed Updating index cache for path `/usr/share/man/man3'. Wait...mandb: can't open /usr/share/man/man3/man3/wl_display_connect.3: No such file or directory mandb: warning: /usr/share/man/man3/wl_display_connect_to_fd.3.gz: bad symlink or ROFF `.so' request mandb: warning: /usr/share/man/man3/pcredemo.3.gz: whatis parse for pcredemo(3) failed mandb: warning: /usr/share/man/man3/TAP::Harness::Beyond.3pm.gz: whatis parse for TAP::Harness::Beyond(3pm) failed Updating index cache for path `/usr/share/man/man8'. Wait...mandb: warning: /usr/share/man/man8/isdnctrl_conf.8.gz: whatis parse for isdnctrl_conf(8) failed mandb: can't resolve /usr/share/man/man8/btrfs-check.8.gz: Too many levels of symbolic links mandb: warning: /usr/share/man/man8/numastat.8.gz: whatis parse for numastat(8) failed