I have now submitted the branches based on 38.5.0esr: https://people.torproject.org/~boklm/try-results/2015-12-14_tor-browser-38.5...
With more details about which test files failed, and some filters to exclude some of them, or check that some which were expected to fail failed: https://people.torproject.org/~boklm/try-results/2015-12-14_tor-browser-38.5...
The following config to filter results is used: https://people.torproject.org/~boklm/try-results/2015-12-14_tor-browser-38.5...
I'm now planning to add all the failed tests from 38.5.0esr to an ignore list, so we can see if we have new tests failing on the next version.