Here are log entries that result from the "sudo apt -t xenial-proposed install cups-daemon"
Preparing to unpack .../libcupsppdc1_2.1.3-4ubuntu0.2_amd64.deb ... Unpacking libcupsppdc1:amd64 (2.1.3-4ubuntu0.2) over (2.1.3-4) ... Preparing to unpack .../libcupsmime1_2.1.3-4ubuntu0.2_amd64.deb ... Unpacking libcupsmime1:amd64 (2.1.3-4ubuntu0.2) over (2.1.3-4) ... Preparing to unpack .../libcupsimage2_2.1.3-4ubuntu0.2_amd64.deb ... Unpacking libcupsimage2:amd64 (2.1.3-4ubuntu0.2) over (2.1.3-4) ... Preparing to unpack .../libcupscgi1_2.1.3-4ubuntu0.2_amd64.deb ... Unpacking libcupscgi1:amd64 (2.1.3-4ubuntu0.2) over (2.1.3-4) ... Preparing to unpack .../cups-core-drivers_2.1.3-4ubuntu0.2_amd64.deb ... Unpacking cups-core-drivers (2.1.3-4ubuntu0.2) over (2.1.3-4) ... Preparing to unpack .../cups-server-common_2.1.3-4ubuntu0.2_all.deb ... Unpacking cups-server-common (2.1.3-4ubuntu0.2) over (2.1.3-4) ... Preparing to unpack .../cups-common_2.1.3-4ubuntu0.2_all.deb ... Unpacking cups-common (2.1.3-4ubuntu0.2) over (2.1.3-4) ... Preparing to unpack .../cups-daemon_2.1.3-4ubuntu0.2_amd64.deb ... Job for cups.service canceled. invoke-rc.d: initscript cups, action "stop" failed. dpkg: warning: subprocess old pre-removal script returned error exit status 1 dpkg: trying script from the new package instead ... Job for cups.service canceled. invoke-rc.d: initscript cups, action "stop" failed. dpkg: error processing archive /var/cache/apt/archives/cups-daemon_2.1.3-4ubuntu0.2_amd64.deb (--unpack): subprocess new pre-removal script returned error exit status 1 Preparing to unpack .../cups-bsd_2.1.3-4ubuntu0.2_amd64.deb ... Unpacking cups-bsd (2.1.3-4ubuntu0.2) over (2.1.3-4) ... Preparing to unpack .../cups-client_2.1.3-4ubuntu0.2_amd64.deb ... Unpacking cups-client (2.1.3-4ubuntu0.2) over (2.1.3-4) ... Preparing to unpack .../libcups2_2.1.3-4ubuntu0.2_amd64.deb ... Unpacking libcups2:amd64 (2.1.3-4ubuntu0.2) over (2.1.3-4) ... Preparing to unpack .../cups_2.1.3-4ubuntu0.2_amd64.deb ... Unpacking cups (2.1.3-4ubuntu0.2) over (2.1.3-4) ... Processing triggers for libc-bin (2.23-0ubuntu9) ... Processing triggers for doc-base (0.10.7) ... Processing 1 changed doc-base file... Processing triggers for man-db (2.7.5-1) ... Errors were encountered while processing: /var/cache/apt/archives/cups-daemon_2.1.3-4ubuntu0.2_amd64.deb Log ended: 2017-08-08 19:32:01 And here is what happens when I try to run "apt upgrade" after that: il@il-VirtualBox:~$ sudo apt upgrade Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these. The following packages have unmet dependencies: cups : Depends: cups-daemon (>= 2.1.3-4ubuntu0.2) cups-core-drivers : Depends: cups-daemon (>= 2.1.3-4ubuntu0.2) cups-daemon : Depends: libcups2 (= 2.1.3-4) but 2.1.3-4ubuntu0.2 is installed E: Unmet dependencies. Try using -f. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to cups in Ubuntu. https://bugs.launchpad.net/bugs/1642966 Title: package cups-daemon 2.1.3-4 failed to install/upgrade: subprocess new pre-removal script returned error exit status 1 Status in cups package in Ubuntu: Fix Released Status in cups source package in Xenial: Triaged Status in cups source package in Yakkety: Fix Released Status in cups source package in Zesty: Fix Released Bug description: This is in xenial-proposed, please block release to -updates accordingly :) [Impact] * fail to upgrade [testcase] Root cause is believed to be reproducible with: #!/bin/bash systemctl stop cups.path cups.service rm /var/cache/cups/org.cups.cupsd systemctl start cups.path touch /var/cache/cups/org.cups.cupsd sleep 1 rm /var/cache/cups/org.cups.cupsd sleep 1 systemctl stop cups.service echo $? ProblemType: Package DistroRelease: Ubuntu 16.04 Package: cups-daemon 2.1.3-4 ProcVersionSignature: Ubuntu 4.4.0-46.67-generic 4.4.24 Uname: Linux 4.4.0-46-generic x86_64 NonfreeKernelModules: zfs zunicode zcommon znvpair zavl ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CupsErrorLog: Date: Fri Nov 18 11:13:15 2016 ErrorMessage: subprocess new pre-removal script returned error exit status 1 InstallationDate: Installed on 2016-05-02 (200 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) Lpstat: device for mallards-officejet-pro-8600: dnssd://Officejet%20Pro%208600%20%5BD63461%5D._ipp._tcp.local/?uuid=1c852a4d-b800-1f08-abcd-d89d67d63461 MachineType: Dell Inc. XPS 15 9550 Papersize: a4 PpdFiles: mallards-officejet-pro-8600: HP Officejet Pro 8600, hpcups 3.16.3 ProcCmdline: BOOT_IMAGE=/boot/vmlinuz-4.4.0-46-generic.efi.signed root=UUID=3643ef37-7cee-41b3-9387-2faa819c44db ro quiet splash vt.handoff=7 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-46-generic.efi.signed root=UUID=3643ef37-7cee-41b3-9387-2faa819c44db ro quiet splash vt.handoff=7 RelatedPackageVersions: dpkg 1.18.4ubuntu1.1 apt 1.2.15 SourcePackage: cups Title: package cups-daemon 2.1.3-4 failed to install/upgrade: subprocess new pre-removal script returned error exit status 1 UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/07/2016 dmi.bios.vendor: Dell Inc. dmi.bios.version: 01.02.00 dmi.board.name: 0N7TVV dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr01.02.00:bd04/07/2016:svnDellInc.:pnXPS159550:pvr:rvnDellInc.:rn0N7TVV:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: XPS 15 9550 dmi.sys.vendor: Dell Inc. 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