/usr/lib/x86_64-linux-gnu/ is in qtdeclarative5-qt3d-plugin 5.0~git20130731-0ubuntu5.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/qt5/
/usr/lib/x86_64-linux-gnu/qt5/qml/
/usr/lib/x86_64-linux-gnu/qt5/qml/Qt3D/
/usr/lib/x86_64-linux-gnu/qt5/qml/Qt3D/qmldir
/usr/lib/x86_64-linux-gnu/qt5/qml/Qt3D/libqthreedqmlplugin.so
/usr/lib/x86_64-linux-gnu/qt5/qml/Qt3D/Shapes/
/usr/lib/x86_64-linux-gnu/qt5/qml/Qt3D/Shapes/Teapot.qml
/usr/lib/x86_64-linux-gnu/qt5/qml/Qt3D/Shapes/cube.obj
/usr/lib/x86_64-linux-gnu/qt5/qml/Qt3D/Shapes/qmldir
/usr/lib/x86_64-linux-gnu/qt5/qml/Qt3D/Shapes/Sphere.qml
/usr/lib/x86_64-linux-gnu/qt5/qml/Qt3D/Shapes/Cube.qml
/usr/lib/x86_64-linux-gnu/qt5/qml/Qt3D/Shapes/quad.obj
/usr/lib/x86_64-linux-gnu/qt5/qml/Qt3D/Shapes/teapot.bez
/usr/lib/x86_64-linux-gnu/qt5/qml/Qt3D/Shapes/Quad.qml
/usr/lib/x86_64-linux-gnu/qt5/qml/Qt3D/Shapes/Capsule.qml
/usr/lib/x86_64-linux-gnu/qt5/qml/Qt3D/Shapes/Cylinder.qml
/usr/lib/x86_64-linux-gnu/qt5/qml/Qt3D/Shapes/plugins.qmltypes
/usr/lib/x86_64-linux-gnu/qt5/qml/Qt3D/plugins.qmltypes