Gnome-boxes dumps core on start

[Roel Brook]

After starting gnome-boxes, after the window is drawn, gnome-boxes crashes with a core-dump.

The following output is displayed in the terminal:
$ gnome-boxes
p11-kit: invalid config filename, will be ignored in the future: /usr/share/p11-kit/modules/.
p11-kit: couldn't read config file: /usr/share/p11-kit/modules/.

** (gnome-boxes:25984): WARNING **: Couldn't register with accessibility bus: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.

(gnome-boxes:25984): Libvirt.GObject-CRITICAL **: gvir_storage_vol_get_info: assertion 'GVIR_IS_STORAGE_VOL(vol)' failed
Segmentation fault (core dumped)

All checks the program provides return success.

$ gnome-boxes --checks

(gnome-boxes:28221): Boxes-WARNING **: util-app.vala:247: Failed to execute child process "restorecon" (No such file or directory)
• The CPU is capable of virtualization: yes
• The KVM module is loaded: yes
• Libvirt KVM guest available: yes
• Boxes storage pool available: yes
• The SELinux context is default: no

Report bugs to <https://bugzilla.gnome.org/enter_bug.cgi?product=gnome-boxes>.
Boxes home page: <http://live.gnome.org/Boxes>.
$ virsh -c qemu:///session pool-dumpxml gnome-boxes
p11-kit: invalid config filename, will be ignored in the future: /usr/share/p11-kit/modules/.
p11-kit: couldn't read config file: /usr/share/p11-kit/modules/.
<pool type='dir'>
  <name>gnome-boxes</name>
  <uuid>b9f4f520-d857-48e9-aae3-e4656ae5fb7e</uuid>
  <capacity unit='bytes'>350211670016</capacity>
  <allocation unit='bytes'>131072</allocation>
  <available unit='bytes'>350211538944</available>
  <source>
  </source>
  <target>
    <path>/sub/boxes</path>
    <permissions>
      <mode>0744</mode>
      <owner>1000</owner>
      <group>1000</group>
    </permissions>
  </target>
</pool>

I will attach the coredump.

The same issue is reported on Fedora: https://bugzilla.redhat.com/show_bug.cgi?id=999957

[Roel Brook (rainmaker52)]

OK, semi fixed.

I did the following:
- Remove the pool using virsh
- rm -r ~/.local/share/gnome-boxes
- reset all dconf values to their default
- Reinstall gnome-boxes

Skipping either the dconf or the ~/.local/share/gnome-boxes folder resulted in the exact same segfault.

Marking this one as fixed, as it seems to have been a local problem.