/usr/include/hidrd/fmt/ is in libhidrd0-dev 0.2.0-11.
This file is owned by root:root, with mode 0o755.
..
/usr/include/hidrd/fmt/cfg.h
/usr/include/hidrd/fmt/code/
/usr/include/hidrd/fmt/code.h
/usr/include/hidrd/fmt/code/snk.h
/usr/include/hidrd/fmt/inst.h
/usr/include/hidrd/fmt/list.h
/usr/include/hidrd/fmt/natv/
/usr/include/hidrd/fmt/natv.h
/usr/include/hidrd/fmt/natv/snk.h
/usr/include/hidrd/fmt/natv/src.h
/usr/include/hidrd/fmt/spec/
/usr/include/hidrd/fmt/spec.h
/usr/include/hidrd/fmt/spec/snk/
/usr/include/hidrd/fmt/spec/snk.h
/usr/include/hidrd/fmt/spec/snk/ent.h
/usr/include/hidrd/fmt/spec/snk/ent_list.h
/usr/include/hidrd/fmt/xml/
/usr/include/hidrd/fmt/xml.h
/usr/include/hidrd/fmt/xml/cfg.h
/usr/include/hidrd/fmt/xml/prop.h
/usr/include/hidrd/fmt/xml/snk.h
/usr/include/hidrd/fmt/xml/src.h