Bug#804586: qtiplot: FTBFS: Error: pdflatex compilation failed

[Chris West (Faux)]

Source: qtiplot
Version: 0.9.8.9-10
Severity: serious
Justification: fails to build from source
Tags: sid stretch
User: reproducible-builds at lists.alioth.debian.org
Usertags: ftbfs
X-Debbugs-CC: reproducible-builds at lists.alioth.debian.org

Dear Maintainer,

The package fails to build:

Generating example index...
finalizing index lists...
writing tag file...
lookup cache used 21183/65536 hits=201203 misses=21385
finished...
/usr/bin/make -C manual -f Makefile all
make[2]: Entering directory '/qtiplot-0.9.8.9/manual'
docbook2html -d qtiplot.dsl docbook-en/index.docbook -e no-valid
Using catalogs: /etc/sgml/catalog
Using stylesheet: /qtiplot-0.9.8.9/manual/qtiplot.dsl
Working on: /qtiplot-0.9.8.9/manual/docbook-en/index.docbook
Done.
dblatex -o qtiplot-manual-en.pdf -c dblatex.conf docbook-en/index.docbook
Build the book set list...
/qtiplot-0.9.8.9/manual/docbook-en/reference.docbook:1103: element sect3: validity error : ID fft-cmd already defined
<sect3 id="fft-cmd"><title>&fft-cmd;</title>
                   ^
/qtiplot-0.9.8.9/manual/docbook-en/reference.docbook:1328: element sect2: validity error : ID recalculate-cmd already defined
	<sect2 id="recalculate-cmd"><title>&recalculate-cmd; (&recalculate-key;)</title
	                           ^
/qtiplot-0.9.8.9/manual/docbook-en/reference.docbook:1334: element sect2: validity error : ID rotate90-cmd already defined
	<sect2 id="rotate90-cmd"><title>&rotate-90-cmd; (&rotate-90-key;)</title>
	                        ^
/qtiplot-0.9.8.9/manual/docbook-en/reference.docbook:1352: element sect2: validity error : ID smooth-cmd already defined
  <sect2 id="smooth-cmd"><title>&smooth-cmd;</title>
                        ^
/qtiplot-0.9.8.9/manual/docbook-en/dialogs.docbook:420: element figure: validity error : ID fig-custom-curves-pie-2 already defined
  <figure id="fig-custom-curves-pie-2">

...

Build index.docbook.pdf
pdflatex failed
index.docbook.tex:5947: Argument of \GTS at CdrTwo has an extra }.
index.docbook.tex:5947: leading text: \caption\label
index.docbook.tex:5947: Paragraph ended before \GTS at CdrTwo was complete.

...

index.docbook.aux:1366: Extra }, or forgotten \endgroup.
index.docbook.aux:1366: leading text: \newlabel{}{{5.57}{131}{\par }
index.docbook.aux:1366: Extra }, or forgotten \endgroup.
index.docbook.aux:1366: leading text: ...bel{}{{5.57}{131}{\par }{figure.5.57}{}}
Unexpected error occured
Error: pdflatex compilation failed
Makefile:13: recipe for target 'pdf' failed
make[2]: *** [pdf] Error 1

Full build log:
https://reproducible.debian.net/rb-pkg/unstable/amd64/qtiplot.html

-- System Information:
Debian Release: stretch/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)