A friend of mine also got this on upgrade (he's not skilled so was quite critical to him):
Whole error on further upgrades were (sorry for italian locale): I seguenti pacchetti NUOVI saranno installati: libmsgpackc2 tmate 0 aggiornati, 2 installati, 1 da rimuovere e 1 non aggiornati. 1 non completamente installati o rimossi. È necessario scaricare 0 B/259 kB di archivi. Dopo quest'operazione, verranno occupati 652 kB di spazio su disco. Continuare? [S/n] s (Lettura del database... 402540 file e directory attualmente installati.) Rimozione di systemd-shim (9-1bzr4ubuntu1)... Rimozione di "deviazione di /usr/share/dbus-1/system-services/org.freedesktop.systemd1.service in /usr/share/dbus-1/system-services/org.freedesktop.systemd1.service.systemd da systemd-shim" dpkg-divert: errore: la rinomina comprende il sovrascrivere "/usr/share/dbus-1/system-services/org.freedesktop.systemd1.service" con il file "/usr/share/dbus-1/system-services/org.freedesktop.systemd1.service.systemd", non consentito dpkg: errore nell'elaborare il pacchetto systemd-shim (--remove): installed systemd-shim package post-removal script subprocess returned error exit status 2 Si sono verificati degli errori nell'elaborazione: systemd-shim E: Sub-process /usr/bin/dpkg returned an error code (1) -- You received this bug notification because you are a member of DX Packages, which is subscribed to systemd-shim in Ubuntu. https://bugs.launchpad.net/bugs/1773859 Title: upgrades to 18.04 fail Status in systemd package in Ubuntu: Confirmed Status in systemd-shim package in Ubuntu: Incomplete Status in systemd source package in Bionic: Confirmed Status in systemd-shim source package in Bionic: Confirmed Bug description: $ sudo apt upgrade Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done The following packages will be REMOVED: systemd-shim 0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded. 1 not fully installed or removed. After this operation, 71.7 kB disk space will be freed. Do you want to continue? [Y/n] y (Reading database ... 632222 files and directories currently installed.) Removing systemd-shim (9-1bzr4ubuntu1) ... Removing 'diversion of /usr/share/dbus-1/system-services/org.freedesktop.systemd1.service to /usr/share/dbus-1/system-services/org.freedesktop.systemd1.service.systemd by systemd-shim' dpkg-divert: error: rename involves overwriting '/usr/share/dbus-1/system-services/org.freedesktop.systemd1.service' with different file '/usr/share/dbus-1/system-services/org.freedesktop.systemd1.service.systemd', not allowed dpkg: error processing package systemd-shim (--remove): subprocess installed post-removal script returned error exit status 2 Errors were encountered while processing: systemd-shim E: Sub-process /usr/bin/dpkg returned an error code (1) Commenting out the dpkg-divert in systemd-shim's postrm solved this for me and I was about to continue the upgrade. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1773859/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : dx-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp
