We have permission from @comp500 to merge mixin-trace into Fabric API.

This would be very valuable to help debug crashes, and it should be relatively straightforward to implement, as part of fabric-crash-report-info-v1! 😄

I'd be happy for mine to be included in Fabric API in some form if you'd like, just be warned that there are probably a few bugs in the current setup, mostly related to how it adds things into the stacktrace

It may also be worth looking at @Geek202's version crash-spotter (with their permission of course), it looks a bit nicer and has some more information - see the #showcase post here.