anchor.diff:     data.table_1.10.4.tar.gz \
      rematch_1.0.1.tar.gz \
      cellranger_1.1.0.tar.gz \
  -   tidyr_0.6.3.tar.gz \
  +   tidyr_0.7.0.tar.gz \
      googlesheets_0.2.2.tar.gz \
      hms_0.3.tar.gz \
      readr_1.1.1.tar.gz \
  
positive.code:    data.table_1.10.4.tar.gz \
     rematch_1.0.1.tar.gz \
     cellranger_1.1.0.tar.gz \
     tidyr_0.6.3.tar.gz \
     hms_0.3.tar.gz \
     readr_1.1.1.tar.gz \
     purrr_0.2.3.tar.gz \
  
negative.code:    https://mirrors.nics.utk.edu/cran/src/contrib/data.table_1.10.4.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/rematch_1.0.1.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/cellranger_1.1.0.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/tidyr_0.7.0.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/googlesheets_0.2.2.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/hms_0.3.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/readr_1.1.1.tar.gz \
  