anchor.diff:      apt-get -qqy install lcov llvm && \
       echo "Installing packages required by Swift toolchain" && \
       apt-get -qqy install clang libicu-dev && \
  +    echo "Installing packages required by rules_webtesting" && \
  +    apt-get -qqy install python-urllib3 python3-urllib3 && \
       echo "Installing packages required by Bazel (Ubuntu 14.04 and 16.04 only)" && \
       apt-get -qqy install realpath libssl-dev && \
       apt-get -qqy purge apport && \
  
positive.code:     apt-get -qqy install lcov llvm && \
      echo "Installing packages required by Swift toolchain" && \
      apt-get -qqy install clang libicu-dev && \
      apt-get -qqy purge apport && \
      rm -rf /var/lib/apt/lists/*
  
  
negative.code:     apt-get -qqy install lcov llvm && \
      echo "Installing packages required by Swift toolchain" && \
      apt-get -qqy install clang libicu-dev && \
      echo "Installing packages required by rules_webtesting" && \
      apt-get -qqy install python-urllib3 python3-urllib3 && \
      echo "Installing packages required by Bazel (Ubuntu 14.04 and 16.04 only)" && \
      apt-get -qqy install realpath libssl-dev && \
      apt-get -qqy purge apport && \
  