Comment 4 for bug 1703368

Adam Conrad your ppa is broken (https://launchpad.net/~adconrad/+archive/ubuntu/staging)
this is on Virtualbox
$ sudo apt upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages will be upgraded:
  libc-bin libc-dev-bin libc6 libc6-dbg libc6-dev locales locales-all multiarch-support
8 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/17,3 MB of archives.
After this operation, 3 711 kB of additional disk space will be used.
Do you want to continue? [Y/n]
Preconfiguring packages ...
(Reading database ... 167704 files and directories currently installed.)
Preparing to unpack .../libc6-dbg_2.26-0ubuntu1~ppa1_amd64.deb ...
Unpacking libc6-dbg:amd64 (2.26-0ubuntu1~ppa1) over (2.24-12ubuntu1) ...
Preparing to unpack .../libc6-dev_2.26-0ubuntu1~ppa1_amd64.deb ...
Unpacking libc6-dev:amd64 (2.26-0ubuntu1~ppa1) over (2.24-12ubuntu1) ...
Preparing to unpack .../libc-dev-bin_2.26-0ubuntu1~ppa1_amd64.deb ...
Unpacking libc-dev-bin (2.26-0ubuntu1~ppa1) over (2.24-12ubuntu1) ...
Preparing to unpack .../libc6_2.26-0ubuntu1~ppa1_amd64.deb ...
Unpacking libc6:amd64 (2.26-0ubuntu1~ppa1) over (2.24-12ubuntu1) ...
Setting up libc6:amd64 (2.26-0ubuntu1~ppa1) ...
Use of uninitialized value in concatenation (.) or string at /usr/share/perl5/Debconf/Config.pm line 22.
dpkg: unrecoverable fatal error, aborting:
 unknown user 'geoclue' in statoverride file
E: Sub-process /usr/bin/dpkg returned an error code (2)