I have been going through the video on building Mango, and while the video is rough to follow, I have been successful up to the Ant build portion. When I first did the ant build using Core/build.xml, as per the video, it started show build messages just like the video, then suddenly the Console was cleared and the only message, at the very top of the console was:
<terminated> Core build.xml[Ant Build] C:\Program Files\Java\jdk1.8.0_111\bin\javaw.exe (current time stamp)
Now everytime I retry the Ant build, nothing shows in the console, not even the starting of the build, it just immediately shows the "terminated" header line.
For reference, I am running Windows 7 Pro, and my eclipse install is Neon-2.