message: travis: parallel build
diff: @@ -78,7 +78,7 @@ install:
  fi
  - sudo apt install libantlr4-runtime-dev antlr4 -y
  - pip install -r requirements.txt
  -- python setup.py build $BUILD_ARGS
  +- python setup.py build $BUILD_ARGS -j $(nproc)
  - python setup.py install $BUILD_ARGS
  script:
  