It seems that boltzmann-brain's build started to fail due to the missing python3.
Perhaps an environment upgrade is required. Sergey, please take a look.
Since Travis CI have problems supporting Python3 and in any case do not build python code, I decided to remove this part from the configuration for now.
It seems that boltzmann-brain's build started to fail due to the missing python3. Perhaps an environment upgrade is required. Sergey, please take a look.