Comment 7 for bug 1097100

I'm afraid it fails to build for me in raring amd64:
python tools/generate_release_notes.py doc/en/release-notes/index.txt doc/en/release-notes/bzr-0.1.txt doc/en/release-notes/bzr-0.10.txt doc/en/release-notes/bzr-0.11.txt doc/en/release-notes/bzr-0.12.txt doc/en/release-notes/bzr-0.13.txt doc/en/release-notes/bzr-0.14.txt doc/en/release-notes/bzr-0.15.txt doc/en/release-notes/bzr-0.16.txt doc/en/release-notes/bzr-0.17.txt doc/en/release-notes/bzr-0.18.txt doc/en/release-notes/bzr-0.6.txt doc/en/release-notes/bzr-0.7.txt doc/en/release-notes/bzr-0.8.txt doc/en/release-notes/bzr-0.9.txt doc/en/release-notes/bzr-0.90.txt doc/en/release-notes/bzr-0.91.txt doc/en/release-notes/bzr-0.92.txt doc/en/release-notes/bzr-1.0.txt doc/en/release-notes/bzr-1.1.txt doc/en/release-notes/bzr-1.10.txt doc/en/release-notes/bzr-1.11.txt doc/en/release-notes/bzr-1.12.txt doc/en/release-notes/bzr-1.13.txt doc/en/release-notes/bzr-1.14.txt doc/en/release-notes/bzr-1.15.txt doc/en/release-notes/bzr-1.16.txt doc/en/release-notes/bzr-1.17.txt doc/en/release-notes/bzr-1.18.txt doc/en/release-notes/bzr-1.2.txt doc/en/release-notes/bzr-1.3.txt doc/en/release-notes/bzr-1.4.txt doc/en/release-notes/bzr-1.5.txt doc/en/release-notes/bzr-1.6.txt doc/en/release-notes/bzr-1.7.txt doc/en/release-notes/bzr-1.8.txt doc/en/release-notes/bzr-1.9.txt doc/en/release-notes/bzr-2.0.txt doc/en/release-notes/bzr-2.1.txt doc/en/release-notes/bzr-2.2.txt doc/en/release-notes/bzr-2.3.txt doc/en/release-notes/bzr-2.4.txt doc/en/release-notes/bzr-2.5.txt doc/en/release-notes/bzr-2.6.txt
python tools/generate_docs.py -o doc/en/user-reference/index.txt rstx
bzr: warning: some compiled extensions could not be loaded; see <https://answers.launchpad.net/bzr/+faq/703>
Traceback (most recent call last):
  File "tools/generate_docs.py", line 111, in <module>
    main(sys.argv)
  File "tools/generate_docs.py", line 97, in main
    infogen_mod.infogen(options, outfile)
  File "bzrlib/doc_generate/autodoc_rstx.py", line 56, in infogen
    outfile.write(_get_body(params, topic_dir))
  File "bzrlib/doc_generate/autodoc_rstx.py", line 68, in _get_body
    output_dir=topic_dir))
  File "bzrlib/doc_generate/autodoc_rstx.py", line 95, in _get_section
    topic_id = _dump_text(output_dir, topic, help)
  File "bzrlib/doc_generate/autodoc_rstx.py", line 134, in _dump_text
    f.writelines(text)
TypeError: writelines() argument must be a sequence of strings
make[2]: *** [doc/en/user-reference/index.txt] Error 1
make[2]: Leaving directory `/tmp/buildd/bzr-2.6.0~bzr6571'
make[1]: *** [override_dh_auto_build] Error 2
make[1]: Leaving directory `/tmp/buildd/bzr-2.6.0~bzr6571'
make: *** [build] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2