Found the following significant warnings:
  Rd warning: /home/hornik/tmp/scratch/RtmpFOHASy/R.INSTALL77de5526139f/suddengains/man/plot_sg.Rd:47: file link ‘scale_fill_viridis_d’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpFOHASy/R.INSTALL77de5526139f/suddengains/man/plot_sg.Rd:49: file link ‘scale_fill_viridis_d’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpFOHASy/R.INSTALL77de5526139f/suddengains/man/plot_sg.Rd:51: file link ‘scale_fill_viridis_d’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpFOHASy/R.INSTALL77de5526139f/suddengains/man/plot_sg_trajectories.Rd:55: file link ‘scale_fill_viridis_d’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpFOHASy/R.INSTALL77de5526139f/suddengains/man/plot_sg_trajectories.Rd:57: file link ‘scale_fill_viridis_d’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpFOHASy/R.INSTALL77de5526139f/suddengains/man/plot_sg_trajectories.Rd:59: file link ‘scale_fill_viridis_d’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpFOHASy/R.INSTALL77de5526139f/suddengains/man/plot_sg_trajectories.Rd:75: file link ‘geom_label_repel’ in package ‘ggrepel’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpFOHASy/R.INSTALL77de5526139f/suddengains/man/write_byperson.Rd:83: file link ‘write_csv’ in package ‘readr’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpFOHASy/R.INSTALL77de5526139f/suddengains/man/write_byperson.Rd:83: file link ‘write_sav’ in package ‘haven’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpFOHASy/R.INSTALL77de5526139f/suddengains/man/write_byperson.Rd:83: file link ‘write_dta’ in package ‘haven’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpFOHASy/R.INSTALL77de5526139f/suddengains/man/write_bysg.Rd:76: file link ‘write_csv’ in package ‘readr’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpFOHASy/R.INSTALL77de5526139f/suddengains/man/write_bysg.Rd:76: file link ‘write_sav’ in package ‘haven’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpFOHASy/R.INSTALL77de5526139f/suddengains/man/write_bysg.Rd:76: file link ‘write_dta’ in package ‘haven’ does not exist and so has been treated as a topic
See ‘/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/suddengains.Rcheck/00install.out’ for details.