In case of 'AttributeError', 'value' is None, so do not try to
access it.
Submitted upstream.

--- pybugz-0.6.11/bugz.py	2006-09-02 14:35:37.000000000 +0200
+++ pybugz-0.6.11/bugz.py	2014-05-05 16:02:20.000000000 +0200
@@ -1249,9 +1254,9 @@ class PrettyBugz(Bugz):
         for field, name in FIELDS + MORE_FIELDS:
             try:
                 value = result.find('//%s' % field).text
+                print '%-12s: %s' % (name, value.encode(self.enc))
             except AttributeError:
                 continue
-            print '%-12s: %s' % (name, value.encode(self.enc))
 
         # Print out the cc'ed people
         cced = result.findall('.//cc')
me='h' onchange='this.form.submit();'>
<option value='koszko' selected='selected'>koszko</option>
<option value='koszko-scripts'>koszko-scripts</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
<table class='tabs'><tr><td>
<a href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=23db83333568266972e666ee66574db29cdbbdc7'>refs</a><a class='active' href='/guix/log/scripts'>log</a><a href='/guix/tree/scripts?id=23db83333568266972e666ee66574db29cdbbdc7'>tree</a><a href='/guix/commit/scripts?id=23db83333568266972e666ee66574db29cdbbdc7'>commit</a><a href='/guix/diff/scripts?id=23db83333568266972e666ee66574db29cdbbdc7'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/scripts'>
<input type='hidden' name='id' value='23db83333568266972e666ee66574db29cdbbdc7'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=23db83333568266972e666ee66574db29cdbbdc7'>root</a>/<a href='/guix/log/scripts?id=23db83333568266972e666ee66574db29cdbbdc7'>scripts</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/scripts?id=23db83333568266972e666ee66574db29cdbbdc7&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2018-06-09 12:02:27 +0200'>2018-06-09</span></td><td><a href='/guix/commit/scripts?id=75e24d7b0e19ab2164aecb340e82d07d2b9714e7'>pull: Install the new Guix in a profile.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/scripts/pull.scm (%pull-version): New variable.
(build-from-source): Pass #:pull-version to BUILD.
(whole-package-for-legacy, derivation-&gt;manifest-entry): New procedure.
(build-and-install): Rewrite in terms of 'build-and-use-profile'.
* guix/scripts/system.scm (maybe-suggest-running-guix-pull)[latest]:
Switch to "/current".
* scripts/guix.in (augment-load-paths!): Remove use of
~/.config/guix/latest.
* build-aux/compile-as-derivation.scm: Replace "/guix/latest/" with
"/current/share/guile/site/X.Y"
* guix/scripts.scm (warn-about-old-distro)[age]: Check "/current"
instead of "/latest".
* doc/guix.texi (Invoking guix pull): Document it.
* doc/contributing.texi (Running Guix Before It Is Installed): Remove
footnote about abusing ~/.config/guix/latest.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-01-28 23:14:55 +0100'>2018-01-28</span></td><td><a href='/guix/commit/scripts?id=63666a348af5ef5190cbe9611c40f2b9188b7967'>guix: Let Emacs detect “scripts/guix.in” appropriate mode.</a><span class='msg-avail'>...<span class='msg-tooltip'>Since commit 6f774d481839f87178c5895ac2d661e141f879b8 which introduces the use
of Guile's meta switch in “scripts/guix.in”, Emacs was not using ‘scheme-mode’
for this file.

* scripts/guix.in: Replace "-*- scheme -*-" with a local variable.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Mathieu Lirzin</td></tr>
<tr><td><span title='2018-01-23 15:01:15 +0100'>2018-01-23</span></td><td><a href='/guix/commit/scripts?id=6f774d481839f87178c5895ac2d661e141f879b8'>guix: Refactor script.</a><span class='msg-avail'>...<span class='msg-tooltip'>* scripts/guix.in: Remove empty surrounding ‘let’.  Define 'main' as the
procedure called when running the script.
(maybe-augment-load-paths!): Rename to ...
(augment-load-paths!): ... this.  Use 'and=&gt;' for 'file-exists?'.
(run-guix-main): Rename to ...
(main): ... this.  Call 'augment-load-paths!'.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Mathieu Lirzin</td></tr>
<tr><td><span title='2018-01-23 10:13:16 +0100'>2018-01-23</span></td><td><a href='/guix/commit/scripts?id=cba386c1295b7054df22dfb4662b1b92f668e2c0'>build: Expand ‘scripts/guix’ at Make time.</a><span class='msg-avail'>...<span class='msg-tooltip'>This moves the complexity of Autotools variable expansion outside of the
application code.

* scripts/guix.in (config-lookup): Delete.
(maybe-augment-load-paths!, run-guix-main): Use fully expanded variables
instead of calling ‘config-lookup’.
* configure.ac: Don't use AC_CONFIG_FILES for ‘scripts/guix’.
Use AC_PROG_SED.
* Makefile.am (scripts/guix): New rule.
(do_subst): New variable.
(CLEANFILES, EXTRA_DIST): Adapt.

Co-authored-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Mathieu Lirzin</td></tr>
<tr><td><span title='2017-03-20 23:26:18 +0100'>2017-03-20</span></td><td><a href='/guix/commit/scripts?id=9437fd7399425ed281e1bfc13240288ba9078caa'>build: Install .go files to $libdir/guile/X.Y.</a><span class='msg-avail'>...<span class='msg-tooltip'>* configure.ac: Define and substitute 'guileobjectdir'.
* Makefile.am (nobase_nodist_guilemodule_DATA): Remove $(GOBJECTS).
(nobase_nodist_guileobject_DATA): New variable.
(guix_install_go_files): Adjust accordingly.
(install-data-hook): Likewise.
* scripts/guix.in (config-lookup): Add 'exec_prefix' and
'guileobjectdir'.  Add '_' in VAR-REF-REGEXP.
(maybe-augment-load-paths!): Distinguish OBJECT-DIR from MODULE-DIR.
</span></span></td><td>Ludovic Courtès</td></tr>