Compile fails using Rustc 1.80.0

[jthiller]

Compiling directly on a Raspberry Pi 3 under a new install cargo build fails to complete.

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Loading 1.79.0 via rustup lends to a successful build.

...

[jthiller]

cargo update time took latest time 0.3.36
Build with rustc 1.80.0 has a couple new warnings on gateway-rs related to the use of time, but completes successfully

[madninja]

fixed #475

The data ack proto code and support in hpr was merged and deployed a while ago (please confirm @michaeldjeffrey ). I've updated that PR to include the rust upgrade issues.

Note @jthiller that currently the CI build limits rust to 1.72 since there were issues with newer rust async on mipsel . This is also why that PR now breaks since crate upgrades require 1.74 or higher. Can we get some testing on a mipsel target with a 1.80 build?

[madninja]

Will need to handle #475 issues separately

[michaeldjeffrey]

The data ack proto code and support in hpr was merged and deployed a while ago (please confirm @michaeldjeffrey ). I've updated that PR to include the rust upgrade issues.

Confirming packet acks are in HPR helium/helium-packet-router#279