Mustpass GLES1.1 test case is always selecting egl config 1 even tough it claims to be testing all configs.
Problem can be easily seen when running ltrace conform -1 mustpass.c 2>&1 | egrep "Config ID|eglGetConfigAttrib|eglCreateWindowSurface"
If this is still an issue, please report it as part of a conformance submission
or in the internal Khronos mailing lists. I don't think there's a whole lot
of interest in ES 1.x conformance within Khronos at this point, but if you
submitted a patch along with a conformance submission it might be accepted.