Comment 4 for bug 1356743

Thanks for the information. The term.log has entries like

files list file for package `netcat-traditional' contains empty filename

which do suggest you have corrupted package index. Please try doing

sudo apt-get clean

before doing the

sudo apt-get update && sudo apt-get -y dist-upgrade && sudo do-release-upgrade

Please also check that 'df -h /' does not show your root disk being full.