/usr/ is in libspice-server-dev 0.12.6-4ubuntu0.4.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/spice-server/
/usr/share/
/usr/share/doc/
/usr/share/doc/libspice-server-dev/
/usr/share/doc/libspice-server-dev/copyright
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/spice-server.pc
/usr/lib/x86_64-linux-gnu/libspice-server.a
/usr/include/spice-server/spice-input.h
/usr/include/spice-server/spice-experimental.h
/usr/include/spice-server/spice-server.h
/usr/include/spice-server/spice-audio.h
/usr/include/spice-server/spice-char.h
/usr/include/spice-server/spice-migration.h
/usr/include/spice-server/spice-core.h
/usr/include/spice-server/spice-qxl.h
/usr/include/spice-server/spice.h
/usr/include/spice-server/spice-version.h
/usr/share/doc/libspice-server-dev/changelog.Debian.gz
/usr/lib/x86_64-linux-gnu/libspice-server.so