/usr/ is in libgnatcoll-readline16.1.0-dev 17.0.2017-3.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/ada/adalib/
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/ada/
/usr/lib/x86_64-linux-gnu/ada/adalib/gnatcoll_readline/
/usr/lib/x86_64-linux-gnu/ada/adalib/gnatcoll_readline/gnatcoll-readline.ali
/usr/lib/x86_64-linux-gnu/libgnatcoll_readline.a
/usr/share/
/usr/share/ada/
/usr/share/ada/adainclude/
/usr/share/ada/adainclude/gnatcoll_readline/
/usr/share/ada/adainclude/gnatcoll_readline/gnatcoll-readline.adb
/usr/share/ada/adainclude/gnatcoll_readline/gnatcoll-readline.ads
/usr/share/doc/
/usr/share/doc/libgnatcoll-readline16.1.0-dev/
/usr/share/doc/libgnatcoll-readline16.1.0-dev/copyright
/usr/share/gpr/
/usr/share/gpr/gnatcoll_readline.gpr
/usr/lib/x86_64-linux-gnu/libgnatcoll_readline.so
/usr/share/doc/libgnatcoll-readline16.1.0-dev/changelog.Debian.gz