What/Why:
From investigating our logger so far, it seems our 'trace' log level doesn't do anything a trace level would normally have, a stack trace; in fact, none of the logging levels do anything unique other than their difference in log level (currently emitting numeric values and not label). It would be very helpful to see the stack trace or at least which file and line the log came from.
How: We can raise a bunyan error for any log which I think should emit a stack trace. I haven't tested this out yet but I believe this would be a way to do this. Any other ideas welcome.