Just did this on my yakkety system:
$ sudo apt-get install uvtool
...
Setting up socat (1.7.3.1-1) ...
Setting up uvtool (0~bzr99-0ubuntu1) ...
Setting up uvtool-libvirt (0~bzr99-0ubuntu1) ...
chown: invalid user: ‘root.libvirtd’
dpkg: error processing package uvtool-libvirt (--configure):
subprocess installed post-installation script returned error exit status 1
...
update-initramfs: Generating /boot/initrd.img-4.4.0-27-generic
Errors were encountered while processing:
uvtool-libvirt
E: Sub-process /usr/bin/dpkg returned an error code (1)
full log is below:
$ sudo apt-get install uvtool
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
augeas-lenses dmeventd ebtables libaugeas0 libdevmapper-event1.02.1
liblvm2app2.2 liblvm2cmd2.02 libnetcf1 libvirt-bin libvirt-clients
libvirt-daemon libvirt-daemon-system libvirt0 libxml2-utils lvm2
python-libvirt python-pyinotify qemu-kvm socat uvtool-libvirt
Suggested packages:
augeas-doc augeas-tools radvd auditd systemtap nfs-common
thin-provisioning-tools python-pyinotify-doc
The following NEW packages will be installed:
augeas-lenses dmeventd ebtables libaugeas0 libdevmapper-event1.02.1
liblvm2app2.2 liblvm2cmd2.02 libnetcf1 libvirt-bin libvirt-clients
libvirt-daemon libvirt-daemon-system libvirt0 libxml2-utils lvm2
python-libvirt python-pyinotify qemu-kvm socat uvtool uvtool-libvirt
0 upgraded, 21 newly installed, 0 to remove and 0 not upgraded.
Need to get 6,673 kB of archives.
After this operation, 26.0 MB of additional disk space will be used.
Do you want to continue? [Y/n]
Get:1 http://us.archive.ubuntu.com/ubuntu yakkety/main amd64 libvirt0 amd64 1.3.4-1ubuntu6 [1,149 kB]
Get:2 http://us.archive.ubuntu.com/ubuntu yakkety/main amd64 libvirt-clients amd64 1.3.4-1ubuntu6 [527 kB]
Get:3 http://us.archive.ubuntu.com/ubuntu yakkety/main amd64 augeas-lenses all 1.5.0-0ubuntu1 [284 kB]
Get:4 http://us.archive.ubuntu.com/ubuntu yakkety/main amd64 libaugeas0 amd64 1.5.0-0ubuntu1 [154 kB]
Get:5 http://us.archive.ubuntu.com/ubuntu yakkety/main amd64 libnetcf1 amd64 1:0.2.8-1ubuntu1 [46.3 kB]
Get:6 http://us.archive.ubuntu.com/ubuntu yakkety/main amd64 libvirt-daemon amd64 1.3.4-1ubuntu6 [1,987 kB]
Get:7 http://us.archive.ubuntu.com/ubuntu yakkety/main amd64 libvirt-daemon-system amd64 1.3.4-1ubuntu6 [136 kB]
Get:8 http://us.archive.ubuntu.com/ubuntu yakkety/main amd64 libdevmapper-event1.02.1 amd64 2:1.02.124-1ubuntu1 [12.6 kB]
Get:9 http://us.archive.ubuntu.com/ubuntu yakkety/main amd64 liblvm2cmd2.02 amd64 2.02.153-1ubuntu1 [548 kB]
Get:10 http://us.archive.ubuntu.com/ubuntu yakkety/main amd64 dmeventd amd64 2:1.02.124-1ubuntu1 [30.7 kB]
Get:11 http://us.archive.ubuntu.com/ubuntu yakkety/main amd64 ebtables amd64 2.0.10.4-3.4ubuntu1 [79.6 kB]
Get:12 http://us.archive.ubuntu.com/ubuntu yakkety/main amd64 liblvm2app2.2 amd64 2.02.153-1ubuntu1 [412 kB]
Get:13 http://us.archive.ubuntu.com/ubuntu yakkety/main amd64 libvirt-bin amd64 1.3.4-1ubuntu6 [5,002 B]
Get:14 http://us.archive.ubuntu.com/ubuntu yakkety/main amd64 libxml2-utils amd64 2.9.3+dfsg1-1.2 [35.0 kB]
Get:15 http://us.archive.ubuntu.com/ubuntu yakkety/main amd64 lvm2 amd64 2.02.153-1ubuntu1 [768 kB]
Get:16 http://us.archive.ubuntu.com/ubuntu yakkety/main amd64 python-libvirt amd64 1.3.4-1ubuntu1 [118 kB]
Get:17 http://us.archive.ubuntu.com/ubuntu yakkety/main amd64 python-pyinotify all 0.9.6-1 [24.6 kB]
Get:18 http://us.archive.ubuntu.com/ubuntu yakkety/main amd64 qemu-kvm amd64 1:2.6+dfsg-3ubuntu1 [7,160 B]
Get:19 http://us.archive.ubuntu.com/ubuntu yakkety/universe amd64 socat amd64 1.7.3.1-1 [321 kB]
Get:20 http://us.archive.ubuntu.com/ubuntu yakkety/universe amd64 uvtool all 0~bzr99-0ubuntu1 [3,520 B]
Get:21 http://us.archive.ubuntu.com/ubuntu yakkety/universe amd64 uvtool-libvirt all 0~bzr99-0ubuntu1 [24.6 kB]
Fetched 6,673 kB in 5s (1,305 kB/s)
Selecting previously unselected package libvirt0:amd64.
(Reading database ... 290517 files and directories currently installed.)
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Unpacking libvirt0:amd64 (1.3.4-1ubuntu6) ...
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Unpacking libvirt-clients (1.3.4-1ubuntu6) ...
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Unpacking libnetcf1:amd64 (1:0.2.8-1ubuntu1) ...
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Unpacking libvirt-daemon (1.3.4-1ubuntu6) ...
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Unpacking libvirt-daemon-system (1.3.4-1ubuntu6) ...
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Unpacking libdevmapper-event1.02.1:amd64 (2:1.02.124-1ubuntu1) ...
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Unpacking liblvm2cmd2.02:amd64 (2.02.153-1ubuntu1) ...
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Unpacking ebtables (2.0.10.4-3.4ubuntu1) ...
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Unpacking liblvm2app2.2:amd64 (2.02.153-1ubuntu1) ...
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Unpacking lvm2 (2.02.153-1ubuntu1) ...
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Unpacking python-libvirt (1.3.4-1ubuntu1) ...
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Unpacking qemu-kvm (1:2.6+dfsg-3ubuntu1) ...
Selecting previously unselected package socat.
Preparing to unpack .../socat_1.7.3.1-1_amd64.deb ...
Unpacking socat (1.7.3.1-1) ...
Selecting previously unselected package uvtool.
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Unpacking uvtool (0~bzr99-0ubuntu1) ...
Selecting previously unselected package uvtool-libvirt.
Preparing to unpack .../uvtool-libvirt_0~bzr99-0ubuntu1_all.deb ...
Unpacking uvtool-libvirt (0~bzr99-0ubuntu1) ...
Processing triggers for libc-bin (2.23-0ubuntu3) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for systemd (230-3git1) ...
Processing triggers for ureadahead (0.100.0-19) ...
Processing triggers for doc-base (0.10.7) ...
Processing 1 added doc-base file...
Setting up libvirt0:amd64 (1.3.4-1ubuntu6) ...
Setting up libvirt-clients (1.3.4-1ubuntu6) ...
Setting up augeas-lenses (1.5.0-0ubuntu1) ...
Setting up libaugeas0 (1.5.0-0ubuntu1) ...
Setting up libnetcf1:amd64 (1:0.2.8-1ubuntu1) ...
Setting up libvirt-daemon (1.3.4-1ubuntu6) ...
Setting up libvirt-daemon-system (1.3.4-1ubuntu6) ...
Adding group `libvirt' (GID 140) ...
Done.
Adding user `libvirt-qemu' to group `libvirt-qemu' ...
Adding user libvirt-qemu to group libvirt-qemu
Done.
Created symlink /etc/systemd/system/multi-user.target.wants/libvirt-guests.service → /lib/systemd/system/libvirt-guests.service.
Created symlink /etc/systemd/system/libvirt-bin.service → /lib/systemd/system/libvirtd.service.
Created symlink /etc/systemd/system/multi-user.target.wants/libvirtd.service → /lib/systemd/system/libvirtd.service.
Created symlink /etc/systemd/system/sockets.target.wants/virtlockd.socket → /lib/systemd/system/virtlockd.socket.
Created symlink /etc/systemd/system/sockets.target.wants/virtlogd.socket → /lib/systemd/system/virtlogd.socket.
Setting up libvirt-daemon dnsmasq configuration.
Setting up libdevmapper-event1.02.1:amd64 (2:1.02.124-1ubuntu1) ...
Setting up ebtables (2.0.10.4-3.4ubuntu1) ...
update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults
Setting up liblvm2app2.2:amd64 (2.02.153-1ubuntu1) ...
Setting up libvirt-bin (1.3.4-1ubuntu6) ...
Setting up libxml2-utils (2.9.3+dfsg1-1.2) ...
Setting up python-libvirt (1.3.4-1ubuntu1) ...
Setting up python-pyinotify (0.9.6-1) ...
Setting up qemu-kvm (1:2.6+dfsg-3ubuntu1) ...
Setting up socat (1.7.3.1-1) ...
Setting up uvtool (0~bzr99-0ubuntu1) ...
Setting up uvtool-libvirt (0~bzr99-0ubuntu1) ...
chown: invalid user: ‘root.libvirtd’
dpkg: error processing package uvtool-libvirt (--configure):
subprocess installed post-installation script returned error exit status 1
Setting up liblvm2cmd2.02:amd64 (2.02.153-1ubuntu1) ...
Setting up dmeventd (2:1.02.124-1ubuntu1) ...
Created symlink /etc/systemd/system/sockets.target.wants/dm-event.socket → /lib/systemd/system/dm-event.socket.
Setting up lvm2 (2.02.153-1ubuntu1) ...
update-initramfs: deferring update (trigger activated)
Created symlink /etc/systemd/system/sysinit.target.wants/lvm2-lvmetad.socket → /lib/systemd/system/lvm2-lvmetad.socket.
Created symlink /etc/systemd/system/sysinit.target.wants/lvm2-lvmpolld.socket → /lib/systemd/system/lvm2-lvmpolld.socket.
Created symlink /etc/systemd/system/sysinit.target.wants/lvm2-monitor.service → /lib/systemd/system/lvm2-monitor.service.
Processing triggers for libc-bin (2.23-0ubuntu3) ...
Processing triggers for systemd (230-3git1) ...
Processing triggers for ureadahead (0.100.0-19) ...
Processing triggers for initramfs-tools (0.122ubuntu9) ...
update-initramfs: Generating /boot/initrd.img-4.4.0-27-generic
Errors were encountered while processing:
uvtool-libvirt
E: Sub-process /usr/bin/dpkg returned an error code (1)
ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: uvtool-libvirt 0~bzr99-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-24.43-generic 4.4.10
Uname: Linux 4.4.0-24-generic x86_64
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
ApportVersion: 2.20.2-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Jun 27 11:31:26 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-07-23 (340 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150722.1)
PackageArchitecture: all
SourcePackage: uvtool
UpgradeStatus: No upgrade log present (probably fresh install)
seems that libvirt now installs a 'libvirt' group, rather than 'libvirtd'.
Horay!