Looking further, the directory in question was actually corrupted, apparently due to either an I/O error or perhaps a kernel bug. In any case, I'm confident it has nothing to do with this package.
** Changed in: unity-asset-pool (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/763195 Title: package unity-asset-pool 0.8.18-0ubuntu2 failed to install/upgrade: unable to stat `./usr/share/doc/unity-asset-pool' (which I was about to install): Input/output error -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs