anchor.diff:  
   RUN mkdir -p /software/boost-1.56 && \
       cd /software/boost-1.56 && \
  -    wget --no-verbose http://downloads.sourceforge.net/boost/boost_1_56_0.tar.bz2 && \
  +    wget --no-verbose -T 10 http://downloads.sourceforge.net/boost/boost_1_56_0.tar.bz2 && \
       tar xvfj boost_1_56_0.tar.bz2 && \
       cd /software/boost-1.56/boost_1_56_0 && \
       ./bootstrap.sh --without-libraries=python --prefix=/usr && ./b2 -j 8 stage threading=multi link=shared && ./b2 -j 8 install threading=multi link=shared
   
   # Install GHC and cabal
  +ENV PATH /opt/ghc/7.10.1/bin:/opt/cabal/1.22/bin:/opt/alex/3.1.4/bin:/opt/happy/1.19.5/bin:/root/.cabal/bin/:$PATH
  +
   WORKDIR /
   RUN add-apt-repository ppa:hvr/ghc && \
       apt-get update && \
  
positive.code:     ./autogen.sh && ./configure --prefix=/usr && make && make install
  
  # Numa ctl
  RUN wget ftp://oss.sgi.com/www/projects/libnuma/download/numactl-2.0.10.tar.gz && \
      tar -xvf numactl-2.0.10.tar.gz && \
      cd numactl-2.0.10 && \
      ./autogen.sh && \
  
negative.code:       clang-3.5 libbz2-dev
  
  # Install and configure GCC 4.9
  RUN add-apt-repository ppa:ubuntu-toolchain-r/test && \
      apt-get update && \
      apt-get install -y gcc-4.9 g++-4.9 libstdc++-4.9-dev && \
      update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.9 20 && \
      update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.9 20
  
  # Install decent vim configuration
  RUN mkdir /root/.vim && \
  