Sorry, the links to logs were going to logs from a preview run. I've just changed the links to direct to the final logs. In the final run, play2-scala did not respond:
https://github.com/TechEmpower/TFB-Round-10/blob/master/peak...
https://github.com/TechEmpower/TFB-Round-10/blob/master/peak...
https://github.com/TechEmpower/FrameworkBenchmarks/blob/mast...
It has the downside that if a process forks other processes and drops them into another different user (recently addressed for hhvm, for example), we cannot capture that. However, we have made great strides in trying to avoid that. Additionally, the logging for the application WOULD suggest if a port were bound prior to start-up, and that does not seem to be the case in this example.
The other primary cause of that "oops" message is when evolutions can't be applied but that also doesn't appear to be the case.