anchor.diff:     googlesheets_0.2.2.tar.gz \
      hms_0.4.2.tar.gz \
      readr_1.1.1.tar.gz \
  -   purrr_0.2.4.tar.gz \
      selectr_0.4-1.tar.gz \
      rvest_0.3.2.tar.gz \
      pbkrtest_0.4-7.tar.gz 
  
positive.code:    bindrcpp_0.2.2.tar.gz \
     pkgconfig_2.0.2.tar.gz \
     plogr_0.2.0.tar.gz \
     tidyselect_0.2.4.tar.gz \
     dplyr_0.7.6.tar.gz 
  
  
negative.code:    https://mirrors.nics.utk.edu/cran/src/contrib/bindrcpp_0.2.2.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/pkgconfig_2.0.2.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/plogr_0.2.0.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/purrr_0.2.4.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/tidyselect_0.2.4.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/dplyr_0.7.6.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/assertthat_0.2.0.tar.gz \
  