Found the following significant warnings:
  DocParse.c:67:2: warning: ‘__xmlDoValidityCheckingDefaultValue’ is deprecated: See https://gnome.pages.gitlab.gnome.org/libxml2/html/deprecated.html [-Wdeprecated-declarations]
  DocParse.c:70:6: warning: ‘__xmlDoValidityCheckingDefaultValue’ is deprecated: See https://gnome.pages.gitlab.gnome.org/libxml2/html/deprecated.html [-Wdeprecated-declarations]
  HTMLParse.c:114:5: warning: ‘__xmlIndentTreeOutput’ is deprecated: See https://gnome.pages.gitlab.gnome.org/libxml2/html/deprecated.html [-Wdeprecated-declarations]
  HTMLParse.c:118:5: warning: ‘__xmlIndentTreeOutput’ is deprecated: See https://gnome.pages.gitlab.gnome.org/libxml2/html/deprecated.html [-Wdeprecated-declarations]
  HTMLParse.c:141:5: warning: ‘__xmlIndentTreeOutput’ is deprecated: See https://gnome.pages.gitlab.gnome.org/libxml2/html/deprecated.html [-Wdeprecated-declarations]
  HTMLParse.c:143:5: warning: ‘use’ is deprecated [-Wdeprecated-declarations]
  HTMLParse.c:152:9: warning: ‘content’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:121:3: warning: ‘validate’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:134:7: warning: ‘xmlSkipBlankChars’ is deprecated: See https://gnome.pages.gitlab.gnome.org/libxml2/html/deprecated.html [-Wdeprecated-declarations]
  RSDTD.c:135:7: warning: ‘xmlParseMarkupDecl’ is deprecated: See https://gnome.pages.gitlab.gnome.org/libxml2/html/deprecated.html [-Wdeprecated-declarations]
  RSDTD.c:555:3: warning: ‘type’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:556:3: warning: ‘type’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:559:3: warning: ‘ocur’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:560:3: warning: ‘ocur’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:563:3: warning: ‘type’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:566:5: warning: ‘c1’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:568:7: warning: ‘c2’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:573:7: warning: ‘c1’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:574:9: warning: ‘c1’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:578:9: warning: ‘c2’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:579:10: warning: ‘c2’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:583:6: warning: ‘name’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:585:9: warning: ‘name’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:589:3: warning: ‘type’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:620:3: warning: ‘c2’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:629:5: warning: ‘type’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:630:5: warning: ‘c2’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:636:3: warning: ‘c1’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:638:3: warning: ‘c2’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:642:5: warning: ‘c1’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:642:5: warning: ‘type’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:643:5: warning: ‘c1’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:645:5: warning: ‘type’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:646:5: warning: ‘c2’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:745:4: warning: ‘tree’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:777:5: warning: ‘next’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:786:7: warning: ‘name’ is deprecated [-Wdeprecated-declarations]
  RSDTD.c:787:7: warning: ‘next’ is deprecated [-Wdeprecated-declarations]
  RUtils.c:142:5: warning: ‘xmlSubstituteEntitiesDefault’ is deprecated: See https://gnome.pages.gitlab.gnome.org/libxml2/html/deprecated.html [-Wdeprecated-declarations]
  XMLTree.c:1147:5: warning: ‘__xmlIndentTreeOutput’ is deprecated: See https://gnome.pages.gitlab.gnome.org/libxml2/html/deprecated.html [-Wdeprecated-declarations]
  XMLTree.c:1159:5: warning: ‘__xmlIndentTreeOutput’ is deprecated: See https://gnome.pages.gitlab.gnome.org/libxml2/html/deprecated.html [-Wdeprecated-declarations]
  XMLTree.c:1246:5: warning: ‘__xmlIndentTreeOutput’ is deprecated: See https://gnome.pages.gitlab.gnome.org/libxml2/html/deprecated.html [-Wdeprecated-declarations]
  XMLTree.c:1421:5: warning: ‘__xmlIndentTreeOutput’ is deprecated: See https://gnome.pages.gitlab.gnome.org/libxml2/html/deprecated.html [-Wdeprecated-declarations]
  XMLTree.c:1425:5: warning: ‘__xmlIndentTreeOutput’ is deprecated: See https://gnome.pages.gitlab.gnome.org/libxml2/html/deprecated.html [-Wdeprecated-declarations]
  XMLTree.c:1437:5: warning: ‘__xmlIndentTreeOutput’ is deprecated: See https://gnome.pages.gitlab.gnome.org/libxml2/html/deprecated.html [-Wdeprecated-declarations]
  XMLTree.c:1439:5: warning: ‘use’ is deprecated [-Wdeprecated-declarations]
  XMLTree.c:1442:9: warning: ‘content’ is deprecated [-Wdeprecated-declarations]
  XMLTree.c:1444:9: warning: ‘content’ is deprecated [-Wdeprecated-declarations]
  XMLTree.c:1539:3: warning: ‘context’ is deprecated [-Wdeprecated-declarations]
See ‘/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/XML.Rcheck/00install.out’ for details.
* used C compiler: ‘gcc-15 (Debian 15.2.0-12) 15.2.0’