/usr/lib/ is in diaspora-common 0.7.3.1+debian2ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/diaspora-common/
/usr/lib/diaspora-common/scripts/
/usr/lib/diaspora-common/scripts/adduser.sh
/usr/lib/diaspora-common/scripts/diaspora-download.sh
/usr/lib/diaspora-common/scripts/diaspora-versions.sh
/usr/lib/diaspora-common/scripts/grantpriv.sh
/usr/lib/diaspora-common/scripts/initdb.sh
/usr/lib/diaspora-common/scripts/rake-tasks.sh
/usr/lib/diaspora-common/scripts/set-env-diaspora.sh
/usr/lib/diaspora-common/scripts/set-env-nginx.sh
/usr/lib/diaspora-common/sha256sums
/usr/lib/tmpfiles.d/
/usr/lib/tmpfiles.d/diaspora.conf