The relevant error is
---
Setting up boinc-client (6.10.17+dfsg-3ubuntu1) ...
chmod: cannot access `/etc/boinc-client/global_prefs_override.xml': No such file or directory
dpkg: error processing boinc-client (--configure):
subprocess installed post-installation script returned error exit status 1
Thanks for your report.
The relevant error is dfsg-3ubuntu1) ... client/ global_ prefs_override. xml': No such file or directory
---
Setting up boinc-client (6.10.17+
chmod: cannot access `/etc/boinc-
dpkg: error processing boinc-client (--configure):
subprocess installed post-installation script returned error exit status 1