JsonFormat error messages provide too little context to be helpful

[jrudolph]

For an example see https://groups.google.com/forum/?hl=en#!topic/spray-user/YETwMSS9w3E

[Kornel]

Hey, any progress on this item? Maybe I could help?

[ktoso]

The project is mostly in "fulfils it's minimal well-defined requirements maintenance mode" so we're not actively looking into these issues. If you'd like to give it a spin please do.

[evfimivs]

It's been 6 years now :\