Comment 1 for bug 370483

Thanks for your bugreport.

Thanks for taking the time to report this bug and helping to make Ubuntu better. Could you please add the log files from '/var/log/dist-upgrade/' to this bugreport as attachments to your bug report? Thanks in advance.

Its quite possible that u-m is right here, in addition to /var/lib/dpkg and /var/lib/apt it requires space in /var/cache/apt/archives to download the deb content. But the logs will have enough information to judge if its a bug in u-m or a legimatiate space problem.