This looks eerily similar to the ulogd bug 606768. - Building txt docs /var/tmp/portage/app-text/linuxdoc-tools-0.9.72/temp/ldt.OOMRpZ8k34/linuxdoc --backend=txt --filter --blanks=1 guide.sgml Processing file guide.sgml nsgmls:<OSFD>0:182:55:E: end tag for "ARTICLE" omitted, but its declaration does not permit this nsgmls:<OSFD>0:8:0: start tag was here LinuxdocTools::process_file: nsgmls failed with exit status 1. Aborting ... [ebuild R ] app-text/linuxdoc-tools-0.9.72 USE="doc*"
Created attachment 485202 [details] build.log
Created attachment 485204 [details] emerge --info
*** This bug has been marked as a duplicate of bug 606768 ***
See https://bugs.gentoo.org/show_bug.cgi?id=606768#c32 and https://bugs.gentoo.org/show_bug.cgi?id=606768#c33.