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dpkg: error processing archive /var/cache/apt/archives/adwaita-icon-theme-full_3.15.90-0ubuntu1~vivid1_all.deb (--unpack):
 trying to overwrite '/usr/share/icons/Adwaita/16x16/actions/edit-delete.png', which is also in package adwaita-icon-theme 3.14.0-2ubuntu7