/usr/lib/x86_64-linux-gnu/ is in libgnatcoll-sqlite1.6-dev 1.6gpl2014-9.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/ada/
/usr/lib/x86_64-linux-gnu/ada/adalib/
/usr/lib/x86_64-linux-gnu/ada/adalib/gnatcoll_sqlite/
/usr/lib/x86_64-linux-gnu/ada/adalib/gnatcoll_sqlite/gnatcoll-sql-sqlite-builder.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/gnatcoll_sqlite/gnatcoll-sql-sqlite.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/gnatcoll_sqlite/gnatcoll-xref-database.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/gnatcoll_sqlite/gnatcoll-sql-sqlite-gnade.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/gnatcoll_sqlite/gnatcoll-xref.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/gnatcoll_sqlite/gnatcoll-xref-database_names.ali
/usr/lib/x86_64-linux-gnu/libgnatcoll_sqlite.a
/usr/lib/x86_64-linux-gnu/libgnatcoll_sqlite.so