/usr/lib/x86_64-linux-gnu/unity8/ is in unity8-fake-env 8.12+16.04.20160401-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/unity8/qml/
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/AccountsService/
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/AccountsService/AccountsService.qmltypes
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/AccountsService/libMockAccountsService-qml.so
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/AccountsService/qmldir
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/Cursor/
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/Cursor/Cursor.qml
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/Cursor/qmldir
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/IntegratedLightDM/
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/IntegratedLightDM/IntegratedLightDM.qmltypes
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/IntegratedLightDM/demo/
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/IntegratedLightDM/demo/liblightdm-qt5-2.so
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/IntegratedLightDM/libMockLightDM-qml.so
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/IntegratedLightDM/liblightdm/
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/IntegratedLightDM/liblightdm/liblightdm-qt5-2.so
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/IntegratedLightDM/qmldir
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/Ubuntu/
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/Ubuntu/SystemSettings/
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/Ubuntu/SystemSettings/SecurityPrivacy/
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/Ubuntu/SystemSettings/SecurityPrivacy/SecurityPrivacy.qmltypes
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/Ubuntu/SystemSettings/SecurityPrivacy/libMockSecurityPrivacy.so
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/Ubuntu/SystemSettings/SecurityPrivacy/qmldir
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/Unity/
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/Unity/Application/
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/Unity/Application/Application.qmltypes
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/Unity/Application/libFakeUnityApplicationQml.so
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/Unity/Application/qmldir
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/libusermetrics/
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/libusermetrics/libusermetricsoutput.so
/usr/lib/x86_64-linux-gnu/unity8/qml/mocks/libusermetrics/libusermetricsoutput.so.1
/usr/lib/x86_64-linux-gnu/unity8/qml/nonmirplugins/
/usr/lib/x86_64-linux-gnu/unity8/qml/nonmirplugins/Unity/
/usr/lib/x86_64-linux-gnu/unity8/qml/nonmirplugins/Unity/Application/
/usr/lib/x86_64-linux-gnu/unity8/qml/nonmirplugins/Unity/Application/Application.qmltypes
/usr/lib/x86_64-linux-gnu/unity8/qml/nonmirplugins/Unity/Application/libFakeUnityApplicationQml.so
/usr/lib/x86_64-linux-gnu/unity8/qml/nonmirplugins/Unity/Application/qmldir
/usr/lib/x86_64-linux-gnu/unity8/qml/scopefakes/
/usr/lib/x86_64-linux-gnu/unity8/qml/scopefakes/Unity/
/usr/lib/x86_64-linux-gnu/unity8/qml/scopefakes/Unity/Unity.qmltypes
/usr/lib/x86_64-linux-gnu/unity8/qml/scopefakes/Unity/libFakeUnityQml.so
/usr/lib/x86_64-linux-gnu/unity8/qml/scopefakes/Unity/qmldir