Found the following significant warnings:
  Rd warning: geom_spline.Rd:112: missing link ‘geom_smooth’
  Rd warning: geom_spline.Rd:51: missing link ‘aes’
  Rd warning: geom_spline.Rd:52: missing link ‘aes_string’
  Rd warning: gf_ash.Rd:110: missing link ‘aes’
  Rd warning: gf_ash.Rd:111: missing link ‘aes_’
  Rd warning: gf_ash.Rd:143: missing link ‘facet_wrap’
  Rd warning: gf_ash.Rd:143: missing link ‘facet_grid’
  Rd warning: gf_ash.Rd:175: missing link ‘geom_histogram’
  Rd warning: gf_bar.Rd:212: missing link ‘facet_wrap’
  Rd warning: gf_bar.Rd:212: missing link ‘facet_grid’
  Rd warning: gf_bin2d.Rd:101: missing link ‘facet_wrap’
  Rd warning: gf_bin2d.Rd:101: missing link ‘facet_grid’
  Rd warning: gf_bin2d.Rd:116: missing link ‘facet_wrap’
  Rd warning: gf_bin2d.Rd:116: missing link ‘facet_grid’
  Rd warning: gf_blank.Rd:103: missing link ‘facet_wrap’
  Rd warning: gf_blank.Rd:103: missing link ‘facet_grid’
  Rd warning: gf_boxplot.Rd:153: missing link ‘facet_wrap’
  Rd warning: gf_boxplot.Rd:153: missing link ‘facet_grid’
  Rd warning: gf_col.Rd:106: missing link ‘facet_wrap’
  Rd warning: gf_col.Rd:106: missing link ‘facet_grid’
  Rd warning: gf_contour.Rd:131: missing link ‘facet_wrap’
  Rd warning: gf_contour.Rd:131: missing link ‘facet_grid’
  Rd warning: gf_count.Rd:104: missing link ‘facet_wrap’
  Rd warning: gf_count.Rd:104: missing link ‘facet_grid’
  Rd warning: gf_crossbar.Rd:123: missing link ‘facet_wrap’
  Rd warning: gf_crossbar.Rd:123: missing link ‘facet_grid’
  Rd warning: gf_curve.Rd:141: missing link ‘facet_wrap’
  Rd warning: gf_curve.Rd:141: missing link ‘facet_grid’
  Rd warning: gf_density.Rd:195: missing link ‘facet_wrap’
  Rd warning: gf_density.Rd:195: missing link ‘facet_grid’
  Rd warning: gf_density_2d.Rd:230: missing link ‘facet_wrap’
  Rd warning: gf_density_2d.Rd:230: missing link ‘facet_grid’
  Rd warning: gf_dotplot.Rd:155: missing link ‘facet_wrap’
  Rd warning: gf_dotplot.Rd:155: missing link ‘facet_grid’
  Rd warning: gf_facet_grid.Rd:15: missing link ‘facet_wrap’
  Rd warning: gf_facet_grid.Rd:15: missing link ‘facet_grid’
  Rd warning: gf_fitdistr.Rd:107: missing link ‘facet_wrap’
  Rd warning: gf_fitdistr.Rd:107: missing link ‘facet_grid’
  Rd warning: gf_freqpoly.Rd:147: missing link ‘facet_wrap’
  Rd warning: gf_freqpoly.Rd:147: missing link ‘facet_grid’
  Rd warning: gf_hex.Rd:125: missing link ‘facet_wrap’
  Rd warning: gf_hex.Rd:125: missing link ‘facet_grid’
  Rd warning: gf_histogram.Rd:189: missing link ‘facet_wrap’
  Rd warning: gf_histogram.Rd:189: missing link ‘facet_grid’
  Rd warning: gf_jitter.Rd:108: missing link ‘facet_wrap’
  Rd warning: gf_jitter.Rd:108: missing link ‘facet_grid’
  Rd warning: gf_line.Rd:142: missing link ‘facet_wrap’
  Rd warning: gf_line.Rd:142: missing link ‘facet_grid’
  Rd warning: gf_point.Rd:103: missing link ‘facet_wrap’
  Rd warning: gf_point.Rd:103: missing link ‘facet_grid’
  Rd warning: gf_polygon.Rd:101: missing link ‘facet_wrap’
  Rd warning: gf_polygon.Rd:101: missing link ‘facet_grid’
  Rd warning: gf_qq.Rd:163: missing link ‘facet_wrap’
  Rd warning: gf_qq.Rd:163: missing link ‘facet_grid’
  Rd warning: gf_quantile.Rd:137: missing link ‘facet_wrap’
  Rd warning: gf_quantile.Rd:137: missing link ‘facet_grid’
  Rd warning: gf_raster.Rd:109: missing link ‘facet_wrap’
  Rd warning: gf_raster.Rd:109: missing link ‘facet_grid’
  Rd warning: gf_rect.Rd:101: missing link ‘facet_wrap’
  Rd warning: gf_rect.Rd:101: missing link ‘facet_grid’
  Rd warning: gf_rug.Rd:182: missing link ‘facet_wrap’
  Rd warning: gf_rug.Rd:182: missing link ‘facet_grid’
  Rd warning: gf_segment.Rd:125: missing link ‘facet_wrap’
  Rd warning: gf_segment.Rd:125: missing link ‘facet_grid’
  Rd warning: gf_sf.Rd:103: missing link ‘facet_wrap’
  Rd warning: gf_sf.Rd:103: missing link ‘facet_grid’
  Rd warning: gf_sina.Rd:121: missing link ‘facet_wrap’
  Rd warning: gf_sina.Rd:121: missing link ‘facet_grid’
  Rd warning: gf_smooth.Rd:162: missing link ‘facet_wrap’
  Rd warning: gf_smooth.Rd:162: missing link ‘facet_grid’
  Rd warning: gf_spline.Rd:115: missing link ‘facet_wrap’
  Rd warning: gf_spline.Rd:115: missing link ‘facet_grid’
  Rd warning: gf_spoke.Rd:125: missing link ‘facet_wrap’
  Rd warning: gf_spoke.Rd:125: missing link ‘facet_grid’
  Rd warning: gf_step.Rd:126: missing link ‘facet_wrap’
  Rd warning: gf_step.Rd:126: missing link ‘facet_grid’
  Rd warning: gf_text.Rd:195: missing link ‘facet_wrap’
  Rd warning: gf_text.Rd:195: missing link ‘facet_grid’
  Rd warning: gf_theme.Rd:12: missing link ‘theme_minimal’
  Rd warning: gf_tile.Rd:105: missing link ‘facet_wrap’
  Rd warning: gf_tile.Rd:105: missing link ‘facet_grid’
  Rd warning: gf_tile.Rd:120: missing link ‘facet_wrap’
  Rd warning: gf_tile.Rd:120: missing link ‘facet_grid’
  Rd warning: gf_violin.Rd:150: missing link ‘facet_wrap’
  Rd warning: gf_violin.Rd:150: missing link ‘facet_grid’
  Rd warning: ggformula-ggproto.Rd:43: missing link ‘stat_qq’
  Rd warning: ggformula.Rd:35: missing link ‘facet_wrap’
  Rd warning: ggformula.Rd:35: missing link ‘facet_grid’
  Rd warning: stat_qqline.Rd:21: missing link ‘aes’
  Rd warning: stat_qqline.Rd:22: missing link ‘aes_string’
See ‘/home/hornik/tmp/R.check/r-patched-gcc/Work/PKGS/ggformula.Rcheck/00install.out’ for details.