user@server:~$ sudo apt update
[sudo] password for user:
Hit:1 http://ca.archive.ubuntu.com/ubuntu xenial InRelease
Hit:2 http://ca.archive.ubuntu.com/ubuntu xenial-updates InRelease
Hit:3 http://ppa.launchpad.net/certbot/certbot/ubuntu xenial InRelease
Hit:4 http://security.ubuntu.com/ubuntu xenial-security InRelease
Hit:5 http://ca.archive.ubuntu.com/ubuntu xenial-backports InRelease
Hit:6 http://ppa.launchpad.net/ondrej/php/ubuntu xenial InRelease
Reading package lists... Done
Building dependency tree
Reading state information... Done
1 package can be upgraded. Run 'apt list --upgradable' to see it.
user@server:~$ apt list --upgradable
Listing... Done
ubuntu-advantage-tools/xenial-updates 27.0~16.04.1 all [upgradable from: 17]
N: There is 1 additional version. Please use the '-a' switch to see it
user@server:~$ apt list --upgradeable -a
Listing... Done
ubuntu-advantage-tools/xenial-updates 27.0~16.04.1 all [upgradable from: 17]
ubuntu-advantage-tools/now 17 all [installed,upgradable to: 27.0~16.04.1]
user@server:~$ sudo apt upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help resolve the situation:

The following packages have unmet dependencies:
 distro-info-data : Breaks: distro-info (< 0.18ubuntu0.18.04.1~) but 0.14ubuntu0.2 is to be installed
E: Broken packages