The Unified Log Viewer is a new project initiated by Eli Perelman, with the ultimate goal of eventually replacing Treeherder current log viewer. I interviewed Mozillians this summer asking them about their workflow and I received multiple complaints regarding the current log viewer. See interview results here. For example, the browser would crash when presented with a very big log file and users are not able to jump to a line number in the log. The new log viewer project is currently being hosted on Taskcluster Github. We are always open for the public contributions. Send us a pull-request.