/usr/ is in libguytools2-dev 2.0.4-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/doc/
/usr/share/doc/libguytools2-dev/
/usr/share/doc/libguytools2-dev/copyright
/usr/lib/
/usr/include/
/usr/include/libguytools2/
/usr/include/libguytools2/toollog.h
/usr/include/libguytools2/toolcfg.h
/usr/include/libguytools2/toolerror.h
/usr/include/libguytools2/toolglobalid.h
/usr/include/libguytools2/toolconstants.h
/usr/include/libguytools2/toolsignal.h
/usr/include/libguytools2/toolsysinfo.h
/usr/include/libguytools2/tooltarget.h
/usr/include/libguytools2/tooltypes.h
/usr/share/doc/libguytools2-dev/changelog.Debian.gz
/usr/lib/libguytools.so