The build lists (in All builds, and Project builds pages) are missing functionality.
This is what is not working:

* Sorting by timespent does not work

* Filtering by successful builds doesn't work

* Filtering by builds with/without errors throws an error

The reason is that we collate BuildRequests and Build objects in the same table. An acceptable solution is to create a spoof Build object for a BuildRequest that failed, and fill it up with information derived from the failed BuildRequest (e.g. start date, end date, timespent, no of errors and warnings, etc).

This would also allow displaying a build dashboard for failed build requests.