Currently, jtreg catches output written to System.out and System.err, by interposing on those streams, but output written to the underlying operating system streams just gets copied to the jtreg stdout/stderr streams.

It would be more helpful if any output written to agent stdout (fd1) and stderr (fd2) while the agent is performing an action on behalf of a test was written to the section in the .jtr file for that action.

And, output written to agent stdout (fd1) and stderr (fd2) while the agent is NOT performing an action on behalf of a test should be written to the new agent log files. CODETOOLS-7902656