Reading package lists...
Building dependency tree...
Reading state information...
Calculating upgrade...
The following packages have been kept back:
  libalgorithm-diff-xs-perl libapparmor-perl libapt-pkg-perl libclone-perl
  libfcgi-perl libfile-fcntllock-perl libhtml-parser-perl
  libimage-magick-q16-perl libio-pty-perl liblist-moreutils-perl
  liblocale-gettext-perl libnet-dbus-perl libnet-ssleay-perl
  libperlio-gzip-perl libsnmp30 libsocket6-perl libsub-name-perl
  libtext-charwidth-perl libtext-iconv-perl libuuid-perl libxml-parser-perl
  libyaml-libyaml-perl perl perl-base
0 upgraded, 0 newly installed, 0 to remove and 24 not upgraded.