I and a friend are implementing a binary network protocol and wanted to serialize and deserialize structs to and from raw bytes, without padding. Some of these structs contain a payload field at the end, which can be arbitrarily large, but is always the last to be read or written. The problem we now faced is that bincode always writes the length (in serialize_bytes) and expects it to be present when deserializing as well. I can't think of a good way to offer this option, considering the limitations of the traits provided by serde, but I really think this should be possible. Any thoughts?