When running with -xml argument tests executed via shell scripts, the only description of a failure in the jtr.xml logs is the exit code of the script which by itself is not very helpful.. the .jtr logfile however contains the full stack trace that would be helpful.

it seesm taht fix for this is very simple: https://github.com/openjdk/jtreg/pull/175/commits/3916e3845a86894b353ffb2b2808e8dd7d6a9439