[Buildbot] #2978: Loading the waterfall while a build is in progress return 500

[Buildbot trac]

#2978: Loading the waterfall while a build is in progress return 500
-------------------+-------------------
Reporter:  Ben     |      Owner:
    Type:  defect  |     Status:  new
Priority:  major   |  Milestone:  0.9.0
 Version:  master  |   Keywords:  web
-------------------+-------------------
 {{{
 2014-10-27 16:39:17+0100 [-] while handling API request
         Traceback (most recent call last):
           File "/home/benoit/buildbot/openvas/venv/local/lib/python2.7
 /site-packages/twisted/internet/defer.py", line 1155, in gotResult
             _inlineCallbacks(r, g, deferred)
           File "/home/benoit/buildbot/openvas/venv/local/lib/python2.7
 /site-packages/twisted/internet/defer.py", line 1099, in _inlineCallbacks
             result = g.send(result)
           File
 "/home/benoit/buildbot/buildbot/master/buildbot/www/rest.py", line 361, in
 renderRest
             request.write(data)
           File "/usr/lib/python2.7/contextlib.py", line 35, in __exit__
             self.gen.throw(type, value, traceback)
         --- <exception caught here> ---
           File
 "/home/benoit/buildbot/buildbot/master/buildbot/www/rest.py", line 111, in
 handleErrors
             yield
           File
 "/home/benoit/buildbot/buildbot/master/buildbot/www/rest.py", line 305, in
 renderRest
             data = rspec.apply(data)
           File
 "/home/benoit/buildbot/buildbot/master/buildbot/data/resultspec.py", line
 161, in apply
             data.sort(cmp=cmpFunc)
           File
 "/home/benoit/buildbot/buildbot/master/buildbot/data/resultspec.py", line
 157, in cmpFunc
             c = f(a, b)
           File
 "/home/benoit/buildbot/buildbot/master/buildbot/data/resultspec.py", line
 150, in <lambda>
             order = [(lambda a, b, k=k[1:]: cmp(b[k], a[k]))
         exceptions.TypeError: can't compare datetime.datetime to NoneType

 2014-10-27 16:39:17+0100 [-] REST error: TypeError("can't compare
 datetime.datetime to NoneType",)
 2014-10-27 16:39:17+0100 [-] "192.168.201.254" - - [27/Oct/2014:15:39:17
 +0000] "GET /api/v2/builds?limit=40&order=-complete_at HTTP/1.0" 500 72
 "http://scaphoid.gb.intevation.de:8020/" "Mozilla/5.0 (X11; Linux i686)
 AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36"
 }}}

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Ticket URL: <http://trac.buildbot.net/ticket/2978>
Buildbot <http://buildbot.net/>
Buildbot: build/test automation