so following up:

panda tip build succeeded and the android test results showed up as expected and all looks fine (manually eyeballed the serial.log and 0xbench results seem to show up nicely).

here where the results show up:
- android results: http://validation.linaro.org/lava-server/dashboard/reports/android-runs/
- panda result: http://validation.linaro.org/lava-server/dashboard/permalink/test-run/e843ef08-cb38-11e0-9729-68b599be548c/ (for build https://android-build.linaro.org/jenkins/job/linaro-android_panda/237/)

leb-panda succeeded build as well, I can also see that LAVA was run with it when going to the job (http://validation.linaro.org/lava-server/scheduler/job/599) but I cannot figure what happened after that. Is there any way to find out what happened to that job (maybe serial.log for a scheduler job?)?

the fact that panda tip showed up as working in LAVA gave me enough comfort to move the panda 11.08-release builds to new toolchain as well. Builds will show up as:

- https://android-build.linaro.org/builds/~linaro-android/panda-11.08-release/#4
- https://android-build.linaro.org/builds/~linaro-android/leb-panda-11.08-release/#4

Let's see if they get properly tested in lava etc.