/usr/lib/ is in slic3r-prusa 1.39.1+dfsg-3.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/slic3r-prusa3d/
/usr/lib/slic3r-prusa3d/Slic3r/
/usr/lib/slic3r-prusa3d/Slic3r/Config.pm
/usr/lib/slic3r-prusa3d/Slic3r/ExPolygon.pm
/usr/lib/slic3r-prusa3d/Slic3r/ExtrusionLoop.pm
/usr/lib/slic3r-prusa3d/Slic3r/ExtrusionPath.pm
/usr/lib/slic3r-prusa3d/Slic3r/Flow.pm
/usr/lib/slic3r-prusa3d/Slic3r/GCode/
/usr/lib/slic3r-prusa3d/Slic3r/GCode/Reader.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/
/usr/lib/slic3r-prusa3d/Slic3r/GUI/2DBed.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/3DScene.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/AboutDialog.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/BedShapeDialog.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/BonjourBrowser.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/ConfigWizard.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/Controller/
/usr/lib/slic3r-prusa3d/Slic3r/GUI/Controller/ManualControlDialog.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/Controller/PrinterPanel.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/Controller.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/MainFrame.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/Notifier.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/OptionsGroup/
/usr/lib/slic3r-prusa3d/Slic3r/GUI/OptionsGroup/Field.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/OptionsGroup.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/Plater/
/usr/lib/slic3r-prusa3d/Slic3r/GUI/Plater/2D.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/Plater/2DToolpaths.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/Plater/3D.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/Plater/3DPreview.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/Plater/3DToolpaths.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/Plater/LambdaObjectDialog.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/Plater/ObjectCutDialog.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/Plater/ObjectPartsPanel.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/Plater/ObjectSettingsDialog.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/Plater/OverrideSettingsPanel.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/Plater.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/Preferences.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/ProgressStatusBar.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/SystemInfo.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI/Tab.pm
/usr/lib/slic3r-prusa3d/Slic3r/GUI.pm
/usr/lib/slic3r-prusa3d/Slic3r/Geometry/
/usr/lib/slic3r-prusa3d/Slic3r/Geometry/Clipper.pm
/usr/lib/slic3r-prusa3d/Slic3r/Geometry.pm
/usr/lib/slic3r-prusa3d/Slic3r/Layer.pm
/usr/lib/slic3r-prusa3d/Slic3r/Line.pm
/usr/lib/slic3r-prusa3d/Slic3r/Model.pm
/usr/lib/slic3r-prusa3d/Slic3r/Point.pm
/usr/lib/slic3r-prusa3d/Slic3r/Polygon.pm
/usr/lib/slic3r-prusa3d/Slic3r/Polyline.pm
/usr/lib/slic3r-prusa3d/Slic3r/Print/
/usr/lib/slic3r-prusa3d/Slic3r/Print/Object.pm
/usr/lib/slic3r-prusa3d/Slic3r/Print/Simple.pm
/usr/lib/slic3r-prusa3d/Slic3r/Print/State.pm
/usr/lib/slic3r-prusa3d/Slic3r/Print.pm
/usr/lib/slic3r-prusa3d/Slic3r/SVG.pm
/usr/lib/slic3r-prusa3d/Slic3r/Surface.pm
/usr/lib/slic3r-prusa3d/Slic3r/Test/
/usr/lib/slic3r-prusa3d/Slic3r/Test/SectionCut.pm
/usr/lib/slic3r-prusa3d/Slic3r/Test.pm
/usr/lib/slic3r-prusa3d/Slic3r/XS.pm
/usr/lib/slic3r-prusa3d/Slic3r.pm
/usr/lib/slic3r-prusa3d/auto/
/usr/lib/slic3r-prusa3d/auto/Slic3r/
/usr/lib/slic3r-prusa3d/auto/Slic3r/XS/
/usr/lib/slic3r-prusa3d/auto/Slic3r/XS/XS.so