Trouble Implementing Tokio-util Decoder for MQTT Broker

[CianToole]

I am pretty new to Rust and MQTT, and I was following this series of articles (https://hassamuddin.com/blog/rust-mqtt/overview/) on writing an async MQTT broker in Rust. As this article is a little dated, I was attempting to update it to use the most recent version of tokio-util (v0.6.8) and mqttrs (v0.4.1).

I think I have been able to update most of the code in that example located here (https://github.com/Heasummn/rust-mqtt), but I have run into some trouble trying to implement tokio_util::codec::Decoder. It seems that my problem comes from the lifetime attached to the Packet enum.

I was wondering if there was a potential workaround for this problem. Something to make the Decoder happy so I can see if everything else is working as it should be. Please let me know if you need any more information from me.