That's because rt3.6-rtfm 2.2.1-3 fails to upgrade:
Setting up rt3.6-rtfm (2.2.1-3) ...
Creating config file /etc/rt3.6-rtfm/debian.conf with new version
upgrading the RT database for RTFM 2.2
updating database schema for 2.1.0...command failed with code 2
postinst script: retry to set up the database schema
command failed with code 255
postinst script: retry to set up the database schema
command failed with code 255
updating database acl for 2.1.0...command failed with code 2
updating database schema for 2.1.30...command failed with code 2
updating database acl for 2.1.30...command failed with code 2
postinst script aborted
dpkg: error processing rt3.6-rtfm (--configure):
subprocess post-installation script returned error exit status 1
That's because rt3.6-rtfm 2.2.1-3 fails to upgrade:
Setting up rt3.6-rtfm (2.2.1-3) ...
Creating config file /etc/rt3. 6-rtfm/ debian. conf with new version
upgrading the RT database for RTFM 2.2
updating database schema for 2.1.0...command failed with code 2
postinst script: retry to set up the database schema
command failed with code 255
postinst script: retry to set up the database schema
command failed with code 255
updating database acl for 2.1.0...command failed with code 2
updating database schema for 2.1.30...command failed with code 2
updating database acl for 2.1.30...command failed with code 2
postinst script aborted
dpkg: error processing rt3.6-rtfm (--configure):
subprocess post-installation script returned error exit status 1