There is also platform spefic config (think 32-bit vs 64-bit on the same host) to set the MINIDUMP_STACKWALK variable for crash dumps (see [https://hg.mozilla.org/releases/mozilla-aurora/rev/e48ae21ed414 patch]).
There is also the developer_config.py which allows you to run the harness on your local machine.
= Status summary of failures =
You can look in the logs and look for:
SUMMARY - Firefox UI update tests failed locales:
= Harness options =