How is the 2nd much better? Considering that a trace contains more than 1 single line? Anyway they'd probably accept a patch for json output format. I don't th

How is the 2nd much better? Considering that a trace contains more than 1 single line? Anyway they'd probably accept a patch for json output format. I don't think it's so difficult to do. You can ask them in advance if they'd be willing to accept it, before starting to write it.