/usr/include/crtmpserver/common/utils/ is in crtmpserver-dev 1.0~dfsg-5.
This file is owned by root:root, with mode 0o755.
..
/usr/include/crtmpserver/common/utils/buffering/
/usr/include/crtmpserver/common/utils/buffering/bitarray.h
/usr/include/crtmpserver/common/utils/buffering/buffering.h
/usr/include/crtmpserver/common/utils/buffering/iobuffer.h
/usr/include/crtmpserver/common/utils/logging/
/usr/include/crtmpserver/common/utils/logging/baseloglocation.h
/usr/include/crtmpserver/common/utils/logging/consoleloglocation.h
/usr/include/crtmpserver/common/utils/logging/fileloglocation.h
/usr/include/crtmpserver/common/utils/logging/formatter.h
/usr/include/crtmpserver/common/utils/logging/logcatloglocation.h
/usr/include/crtmpserver/common/utils/logging/logeventfactory.h
/usr/include/crtmpserver/common/utils/logging/logger.h
/usr/include/crtmpserver/common/utils/logging/logging.h
/usr/include/crtmpserver/common/utils/logging/syslogloglocation.h
/usr/include/crtmpserver/common/utils/lua/
/usr/include/crtmpserver/common/utils/lua/luautils.h
/usr/include/crtmpserver/common/utils/mempool/
/usr/include/crtmpserver/common/utils/mempool/mempool.h
/usr/include/crtmpserver/common/utils/misc/
/usr/include/crtmpserver/common/utils/misc/crypto.h
/usr/include/crtmpserver/common/utils/misc/dhgroups.h
/usr/include/crtmpserver/common/utils/misc/file.h
/usr/include/crtmpserver/common/utils/misc/linkedlist.h
/usr/include/crtmpserver/common/utils/misc/misc.h
/usr/include/crtmpserver/common/utils/misc/mmapfile.h
/usr/include/crtmpserver/common/utils/misc/timersmanager.h
/usr/include/crtmpserver/common/utils/misc/uri.h
/usr/include/crtmpserver/common/utils/misc/variant.h
/usr/include/crtmpserver/common/utils/misc/variantmap.h
/usr/include/crtmpserver/common/utils/utils.h