Found the following significant warnings:
  Rd warning: /home/hornik/tmp/scratch/RtmpOGT0Pg/R.INSTALL49425c856311/ggnetwork/man/format_fortify.Rd:69: file link ‘igraph-package’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpOGT0Pg/R.INSTALL49425c856311/ggnetwork/man/format_fortify.Rd:24: file link ‘igraph-package’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpOGT0Pg/R.INSTALL49425c856311/ggnetwork/man/fortify.igraph.Rd:5: file link ‘igraph-package’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpOGT0Pg/R.INSTALL49425c856311/ggnetwork/man/fortify.igraph.Rd:56: file link ‘igraph-package’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpOGT0Pg/R.INSTALL49425c856311/ggnetwork/man/fortify.igraph.Rd:19: file link ‘igraph-package’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpOGT0Pg/R.INSTALL49425c856311/ggnetwork/man/fortify.igraph.Rd:24: file link ‘igraph-package’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpOGT0Pg/R.INSTALL49425c856311/ggnetwork/man/geom_edges.Rd:84: file link ‘geom_curve’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpOGT0Pg/R.INSTALL49425c856311/ggnetwork/man/geom_edgetext.Rd:98: file link ‘geom_label’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpOGT0Pg/R.INSTALL49425c856311/ggnetwork/man/geom_edgetext_repel.Rd:127: 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/RtmpOGT0Pg/R.INSTALL49425c856311/ggnetwork/man/geom_nodetext.Rd:98: file link ‘geom_label’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpOGT0Pg/R.INSTALL49425c856311/ggnetwork/man/geom_nodetext_repel.Rd:124: 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/RtmpOGT0Pg/R.INSTALL49425c856311/ggnetwork/man/ggnetwork.Rd:11: file link ‘igraph-package’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpOGT0Pg/R.INSTALL49425c856311/ggnetwork/man/unit.Rd:7: file link ‘unit’ in package ‘ggplot2’ does not exist and so has been treated as a topic
See ‘/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ggnetwork.Rcheck/00install.out’ for details.