What's your OS? Confirmed session information

[uribo]

My session info.

R 3.5.0 Debian GNU/Linux 9

```r R version 3.5.0 (2018-04-23) Platform: x86_64-pc-linux-gnu (64-bit) Running under: Debian GNU/Linux 9 (stretch) Matrix products: default BLAS: /usr/lib/openblas-base/libblas.so.3 LAPACK: /usr/lib/libopenblasp-r0.2.19.so locale: [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C LC_TIME=en_US.UTF-8 [4] LC_COLLATE=en_US.UTF-8 LC_MONETARY=en_US.UTF-8 LC_MESSAGES=C [7] LC_PAPER=en_US.UTF-8 LC_NAME=C LC_ADDRESS=C [10] LC_TELEPHONE=C LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C attached base packages: [1] stats graphics grDevices utils datasets methods base other attached packages: [1] egg_0.2.0 gridExtra_2.3 gghighlight_0.0.1.9000 ggrepel_0.8.0 [5] gganimate_0.1.0.9000 lubridate_1.7.4 bindrcpp_0.2.2 forcats_0.3.0 [9] stringr_1.3.1 dplyr_0.7.5 purrr_0.2.5 readr_1.1.1 [13] tidyr_0.8.0 tibble_1.4.2 ggplot2_2.2.1.9000 tidyverse_1.2.1 [17] xaringanthemer_0.1.1 loaded via a namespace (and not attached): [1] tidyselect_0.2.4 reshape2_1.4.3 haven_1.1.1 lattice_0.20-35 colorspace_1.3-2 [6] htmltools_0.3.6 yaml_2.1.19 utf8_1.1.4 rlang_0.2.0.9001 pillar_1.2.3 [11] foreign_0.8-70 glue_1.2.0.9000 withr_2.1.2 modelr_0.1.1 readxl_1.1.0 [16] bindr_0.1.1 plyr_1.8.4 munsell_0.4.3 gtable_0.2.0 cellranger_1.1.0 [21] rvest_0.3.2 evaluate_0.10.1 psych_1.8.3.3 labeling_0.3 knitr_1.20 [26] parallel_3.5.0 broom_0.4.4 Rcpp_0.12.17 scales_0.5.0.9000 backports_1.1.2 [31] jsonlite_1.5 mnormt_1.5-5 digest_0.6.15 hms_0.4.2 stringi_1.2.2 [36] grid_3.5.0 rprojroot_1.3-2 here_0.1 cli_1.0.0 tools_3.5.0 [41] magrittr_1.5 lazyeval_0.2.1 crayon_1.3.4 pkgconfig_2.0.1 rsconnect_0.8.8 [46] xml2_1.2.0 rmarkdown_1.9 assertthat_0.2.0 httr_1.3.1 rstudioapi_0.7 [51] R6_2.2.2 nlme_3.1-137 compiler_3.5.0 ```

[uribo]

R 3.5.0 macOS High Sierra 10.13.4

```r R version 3.5.0 (2018-04-23) Platform: x86_64-apple-darwin15.6.0 (64-bit) Running under: macOS High Sierra 10.13.4 Matrix products: default BLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib LAPACK: /Library/Frameworks/R.framework/Versions/3.5/Resources/lib/libRlapack.dylib locale: [1] ja_JP.UTF-8/ja_JP.UTF-8/ja_JP.UTF-8/C/ja_JP.UTF-8/ja_JP.UTF-8 attached base packages: [1] stats graphics grDevices utils datasets methods base other attached packages: [1] egg_0.2.0 gridExtra_2.3 lubridate_1.7.4 bindrcpp_0.2.2 [5] forcats_0.3.0 stringr_1.3.1 dplyr_0.7.5 purrr_0.2.4 [9] readr_1.1.1 tidyr_0.8.1 tibble_1.4.2 ggplot2_2.2.1.9000 [13] tidyverse_1.2.1 loaded via a namespace (and not attached): [1] Rcpp_0.12.17 cellranger_1.1.0 pillar_1.2.3 compiler_3.5.0 plyr_1.8.4 [6] bindr_0.1.1 tools_3.5.0 jsonlite_1.5 gtable_0.2.0 nlme_3.1-137 [11] lattice_0.20-35 pkgconfig_2.0.1 rlang_0.2.0.9001 psych_1.8.4 cli_1.0.0 [16] rstudioapi_0.7 parallel_3.5.0 haven_1.1.1 withr_2.1.2 xml2_1.2.0 [21] httr_1.3.1 knitr_1.20 hms_0.4.2 rprojroot_1.3-2 grid_3.5.0 [26] tidyselect_0.2.4 glue_1.2.0 here_0.1 R6_2.2.2 readxl_1.1.0 [31] foreign_0.8-70 modelr_0.1.2 reshape2_1.4.3 magrittr_1.5 backports_1.1.2 [36] scales_0.5.0.9000 rvest_0.3.2 assertthat_0.2.0 mnormt_1.5-5 colorspace_1.3-2 [41] labeling_0.3 utf8_1.1.4 stringi_1.2.2 lazyeval_0.2.1 munsell_0.4.3 [46] broom_0.4.4 crayon_1.3.4 ```