root@nyarlko:~# apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
  cpp-5 g++-5 gcc-5 gcc-5-base libasan2 libatomic1 libcc1-0 libcilkrts5 libgcc-5-dev libgcc1 libgfortran3 libgnutls-deb0-28:i386
  libgomp1 libitm1 liblsan0 libmpx0 libobjc4 libquadmath0 libstdc++-5-dev libstdc++6 libtsan0 libubsan0
0 upgraded, 0 newly installed, 0 to remove and 22 not upgraded.