Results 3 issues of jesse

According the kafka documentation if I use assign instead of subscribe method, I don't need to set a group id, but I got the following error: Can't subscribe to specified...

As the title, rustls 0.20 seems not compatible with 0.19.

**Feature description:** It would be good the error message has the i18n feature or can integrate with some i18n libs, then the error message can come out with different language...

Feature