All errors are forcibly thrown in the trash

[sfackler]

The various ServerProto traits can all return errors, but those errors are thrown away (e.g. here). It is really important for debugability to be able to have some nonzero amount of information about what's happening when your requests aren't getting through.

You can write a wrapping proto that intercepts the errors and e.g. logs them but it is over 100 lines of code for a single "kind" of proto, and regardless, silently throwing away errors is not a reasonable default. Here's one example of confusion caused by this: sfackler/rust-postgres#260