/usr/include/ is in libotf-trace-dev 1.12.5+dfsg-1build2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/OTF_WBuffer.h
/usr/include/OTF_KeyValue.h
/usr/include/OTF_File_iofsl.h
/usr/include/OTF_inttypes.h
/usr/include/OTF_Errno.h
/usr/include/otfaux.h
/usr/include/OTFAUX_MsgMatching.h
/usr/include/otf.h
/usr/include/OTF_FileManager.h
/usr/include/OTF_Filenames.h
/usr/include/OTF_RStream.h
/usr/include/OTF_MasterControl.h
/usr/include/OTF_Reader.h
/usr/include/OTF_CopyHandler_stream.h
/usr/include/OTF_inttypes_unix.h
/usr/include/OTF_HandlerArray.h
/usr/include/OTF_RBuffer.h
/usr/include/OTF_Writer.h
/usr/include/OTFAUX_Thumbnail.h
/usr/include/OTF_Definitions.h
/usr/include/OTF_CopyHandler.h
/usr/include/OTF_Version.h
/usr/include/OTF_File.h
/usr/include/OTF_WStream.h
/usr/include/OTFAUX_State.h