Found the following significant warnings:
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/facet_edges.Rd:49: file link ‘label_parsed’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/facet_edges.Rd:50: file link ‘label_value’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/facet_graph.Rd:58: file link ‘label_parsed’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/facet_graph.Rd:59: file link ‘label_value’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/facet_nodes.Rd:49: file link ‘label_parsed’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/facet_nodes.Rd:50: file link ‘label_value’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/geom_node_text.Rd:94: file link ‘geom_label’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/geom_node_voronoi.Rd:90: file link ‘geom_voronoi_tile’ in package ‘ggforce’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/geom_node_voronoi.Rd:92: file link ‘geom_voronoi_tile’ in package ‘ggforce’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/geometry.Rd:45: file link ‘margin’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/guide_edge_colourbar.Rd:69: file link ‘element_text’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/guide_edge_colourbar.Rd:86: file link ‘element_text’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/guide_edge_direction.Rd:37: file link ‘element_text’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/layout_tbl_graph_igraph.Rd:57: file link ‘as_tree’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/layout_tbl_graph_igraph.Rd:60: file link ‘with_sugiyama’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/layout_tbl_graph_igraph.Rd:67: file link ‘as_bipartite’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/layout_tbl_graph_igraph.Rd:69: file link ‘as_star’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/layout_tbl_graph_igraph.Rd:72: file link ‘in_circle’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/layout_tbl_graph_igraph.Rd:74: file link ‘nicely’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/layout_tbl_graph_igraph.Rd:77: file link ‘with_dh’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/layout_tbl_graph_igraph.Rd:79: file link ‘with_gem’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/layout_tbl_graph_igraph.Rd:82: file link ‘with_graphopt’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/layout_tbl_graph_igraph.Rd:84: file link ‘on_grid’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/layout_tbl_graph_igraph.Rd:87: file link ‘with_mds’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/layout_tbl_graph_igraph.Rd:89: file link ‘on_sphere’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/layout_tbl_graph_igraph.Rd:91: file link ‘randomly’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/layout_tbl_graph_igraph.Rd:93: file link ‘with_fr’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/layout_tbl_graph_igraph.Rd:95: file link ‘with_kk’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/layout_tbl_graph_igraph.Rd:97: file link ‘with_drl’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/layout_tbl_graph_igraph.Rd:99: file link ‘with_lgl’ in package ‘igraph’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/reexports.Rd:15: file link ‘scale_color_viridis’ in package ‘viridis’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/reexports.Rd:15: file link ‘scale_fill_viridis’ in package ‘viridis’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/scale_edge_size.Rd:43: file link ‘censor’ in package ‘scales’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/scale_edge_size.Rd:45: file link ‘squish’ in package ‘scales’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/scale_edge_size.Rd:46: file link ‘squish_infinite’ in package ‘scales’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/scale_edge_width.Rd:73: file link ‘geom_line’ in package ‘ggplot2’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/scale_edge_width.Rd:37: file link ‘censor’ in package ‘scales’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/scale_edge_width.Rd:39: file link ‘squish’ in package ‘scales’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/scale_edge_width.Rd:40: file link ‘squish_infinite’ in package ‘scales’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/scale_label_size.Rd:37: file link ‘censor’ in package ‘scales’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/scale_label_size.Rd:39: file link ‘squish’ in package ‘scales’ does not exist and so has been treated as a topic
  Rd warning: /home/hornik/tmp/scratch/RtmpeVsLph/R.INSTALL42495aae59d7/ggraph/man/scale_label_size.Rd:40: file link ‘squish_infinite’ in package ‘scales’ does not exist and so has been treated as a topic
See ‘/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ggraph.Rcheck/00install.out’ for details.