which upgrade failed? Obviously there is no error message, this is the correct output.

as for the following prompt, didn't the command already prompt you? Lets you use apt autoremote to delete packages that are no longer in use.

if you want a complete upgrade, you should use apt-get dist-upgrade instead of apt-get upgrade . Notice the following prompt apt autoremove , ubuntu has begun to integrate the previous apt-xxx commands with the apt command, and users don't need to remember a bunch of apt-xxx commands in the future.

for example, if you want to update all the software packages of the system, you can do it with an apt:

$ sudo apt update && sudo apt full-upgrade -sharp apt full-upgrade == apt-get dist-upgrade