Tolerate trivial numeric casts. Casting between size_t and u64 is intentional.
Tolerate trivial numeric casts.
Casting between size_t and u64 is intentional.

petehayes102/rust-zmq,pfernie/rust-zmq,pblasucci/rust-zmq,alexkamp/rust-zmq,erickt/rust-zmq,jedisct1/rust-zmq,tempbottle/rust-zmq,dginev/rust-zmq