I've checked in the attached patches to regression.py. They: 1. Stop regression.py from using the --toolset option to bjam, as it still causes problem. I've posted about this to boost-testing, but got no reply, and it getting really awkward to ask testers to manually grab "last known good" version of regression.py. I've filed a Boost.Build ticket for the underlying problem: https://zigzag.cs.msu.su:7813/boost.build/ticket/119 Please don't put --toolset option to regression.py until that ticket is closed and there's agreement the --toolset option is good. 2. Make regression.py send full bjam logs by default, so that to reduce the need to talk to testers (and timezene-associated delay) is something goes wrong. If you're pressed for bandwidth, you can use --dont-send-bjam-logs option to suppress this. - Volodya