We use TeamCity as a continuous integration server to build different configurations of Unigine engine, tools, SDKs and so on. We also use Trac as an issue tracker. The problem was lack of their native integration, but it's solved: Max wrote a TeamcityIntegration plugin, feel free to use it.
BTW, it takes about 5 minutes to make full rebuild of Unigine (engine+tools, both release and debug) on a Linux build node, while the Windows one (which has more powerful hardware) spends 12+ minutes for the same build type. So ccache rules, we do miss it for Visual Studio.