anchor.diff:      globals_0.12.2.tar.gz \
       listenv_0.7.0.tar.gz \
       future_1.9.0.tar.gz \
  +    foreach_1.4.4.tar.gz \
  +    iterators_1.0.10.tar.gz \
       doMC_1.3.5.tar.gz \
  -    foreach_1.4.4.tar.gz \
       doParallel_1.0.11.tar.gz \
       furrr_0.1.0.tar.gz \
       drat_0.1.4.tar.gz \
  
positive.code:     modelr_0.1.2.tar.gz \
      ps_1.1.0.tar.gz \
      globals_0.12.2.tar.gz \
      listenv_0.7.0.tar.gz \
      processx_3.2.0.tar.gz \
      clipr_0.4.1.tar.gz \
  
negative.code:     https://mirrors.nics.utk.edu/cran/src/contrib/ps_1.1.0.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/globals_0.12.2.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/listenv_0.7.0.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/foreach_1.4.4.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/iterators_1.0.10.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/bench_1.0.1.tar.gz 
  
  RUN DEBIAN_FRONTEND=noninteractive R CMD INSTALL \
  