Hmm, that's alarming. Any clang or user-config.jam experts out there who can tell me what switches are needed to get C++11/14/1x/1y/1z/etc support to turn on? 

The info file for that runner:
http://www.boost.org/development/tests/develop/teeks99-02-dc3-5-14-Docker-64on64.html
Indicates that the job (run with the regression parameter `--toolsets=clang-3.5~c++14`) is running with the flags `-Wno-c99-extensions -std=c++14`...I had thought this was correct?

Thanks for any help,