sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  mantis
Use 'apt-get autoremove' to remove them.
The following packages will be REMOVED
  mantis
0 upgraded, 0 newly installed, 1 to remove and 2 not upgraded.
1 not fully installed or removed.
Need to get 0B of archives.
After unpacking 4780kB disk space will be freed.
Do you want to continue [Y/n]? y
(Reading database ... 21518 files and directories currently installed.)
Removing mantis ...
/var/lib/dpkg/info/mantis.postrm: 90: makepasswd: not found
dpkg: error processing mantis (--remove):
 subprocess post-removal script returned error exit status 127
Errors were encountered while processing:
 mantis
E: Sub-process /usr/bin/dpkg returned an error code (1)