/usr/lib/ is in libdune-pdelab-dev 2.5.0~20170124g7cf9f47a-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/dunecontrol/dune-pdelab/
/usr/lib/dunecontrol/
/usr/lib/dunecontrol/dune-pdelab/dune.module
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/cmake/
/usr/lib/x86_64-linux-gnu/cmake/dune-pdelab/
/usr/lib/x86_64-linux-gnu/cmake/dune-pdelab/dune-pdelab-config-version.cmake
/usr/lib/x86_64-linux-gnu/cmake/dune-pdelab/dune-pdelab-config.cmake
/usr/lib/x86_64-linux-gnu/cmake/dune-pdelab/dune-pdelab-targets-none.cmake
/usr/lib/x86_64-linux-gnu/cmake/dune-pdelab/dune-pdelab-targets.cmake
/usr/lib/x86_64-linux-gnu/libdunepdelab.so.2.5-dev
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/dune-pdelab.pc
/usr/lib/x86_64-linux-gnu/libdunepdelab.so