Reading state information... Done
153 packages can be upgraded. Run 'apt list --upgradable' to see them.
Reading package lists... Done
Building dependency tree       
Reading state information... Done
You might want to run 'apt-get -f install' to correct these.
The following packages have unmet dependencies:
 libc6-dbg : Depends: libc6 (= 2.21-0ubuntu4.1) but 2.21-0ubuntu4 is installed
 libc6-dev : Depends: libc6 (= 2.21-0ubuntu4.1) but 2.21-0ubuntu4 is installed
 linux-generic : Depends: linux-headers-generic (= 4.2.0.34.37) but 4.2.0.25.27 is installed
 linux-image-extra-4.2.0-34-generic : Depends: linux-image-4.2.0-34-generic but it is not installed
 linux-image-generic : Depends: linux-image-4.2.0-34-generic but it is not installed
E: Unmet dependencies. Try using -f.