/usr/share/lua/5.3/cqueues/ is in lua-cqueues 20161214-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/lua/5.3/cqueues/auxlib.lua
/usr/share/lua/5.3/cqueues/condition.lua
/usr/share/lua/5.3/cqueues/dns/
/usr/share/lua/5.3/cqueues/dns.lua
/usr/share/lua/5.3/cqueues/dns/config.lua
/usr/share/lua/5.3/cqueues/dns/hints.lua
/usr/share/lua/5.3/cqueues/dns/hosts.lua
/usr/share/lua/5.3/cqueues/dns/packet.lua
/usr/share/lua/5.3/cqueues/dns/record.lua
/usr/share/lua/5.3/cqueues/dns/resolver.lua
/usr/share/lua/5.3/cqueues/dns/resolvers.lua
/usr/share/lua/5.3/cqueues/errno.lua
/usr/share/lua/5.3/cqueues/notify.lua
/usr/share/lua/5.3/cqueues/promise.lua
/usr/share/lua/5.3/cqueues/signal.lua
/usr/share/lua/5.3/cqueues/socket/
/usr/share/lua/5.3/cqueues/socket.lua
/usr/share/lua/5.3/cqueues/socket/debug.lua
/usr/share/lua/5.3/cqueues/thread.lua