/usr/lib/x86_64-linux-gnu/ is in libqt5sensors5-dev 5.2.1+dfsg-2ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/cmake/
/usr/lib/x86_64-linux-gnu/cmake/Qt5Sensors/
/usr/lib/x86_64-linux-gnu/libQt5Sensors.prl
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/Qt5Sensors.pc
/usr/lib/x86_64-linux-gnu/cmake/Qt5Sensors/Qt5Sensors_genericSensorPlugin.cmake
/usr/lib/x86_64-linux-gnu/cmake/Qt5Sensors/Qt5SensorsConfigVersion.cmake
/usr/lib/x86_64-linux-gnu/cmake/Qt5Sensors/Qt5SensorsConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/Qt5Sensors/Qt5Sensors_.cmake
/usr/lib/x86_64-linux-gnu/qt5/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/qt_lib_sensors.pri
/usr/lib/x86_64-linux-gnu/libQt5Sensors.so