On the scmPollLog page (e.g., http://xxx:8080/hudson/job/yyy/scmPollLog/), there
are links in the "Build history" box for "for all" and "for failures", which
have URLs:

http://xxx:8080/hudson/job/yyy/scmPollLog/rssAll
http://xxx:8080/hudson/job/yyy/scmPollLog/rssFailed

Both of these links are 404s. The URLs should look like this:

http://xxx:8080/hudson/job/yyy/rssAll
http://xxx:8080/hudson/job/yyy/rssFailed

I've made a simple patch which fixes this. I'll attach it, if this issue tracker
allows it, otherwise I'll describe it in a follow-up.