Preparing to replace unattended-upgrades 0.73ubuntu1 (using .../unattended-upgrades_0.76_all.deb) ...
Checking for running unattended-upgrades: 
Unpacking replacement unattended-upgrades ...
Preparing to replace python-pycurl 7.19.0-4ubuntu2 (using .../python-pycurl_7.19.0-4ubuntu3_amd64.deb) ...
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Selecting previously unselected package libatk-adaptor-schemas.
Unpacking libatk-adaptor-schemas (from .../libatk-adaptor-schemas_2.4.0-1ubuntu1_amd64.deb) ...
dpkg: error processing /var/cache/apt/archives/libatk-adaptor-schemas_2.4.0-1ubuntu1_amd64.deb (--unpack):
 trying to overwrite '/usr/share/glib-2.0/schemas/org.a11y.atspi.gschema.xml', which is also in package libatk-adaptor 2.2.1-0ubuntu1