add test for general use case when the build script throws an exception, that the cache behaves properly.
add test for general use case when the build script throws an exception, that the cache behaves properly.

mglodack/FAKE,MichalDepta/FAKE,Kazark/FAKE,MiloszKrajewski/FAKE,rflechner/FAKE,RMCKirby/FAKE,MiloszKrajewski/FAKE,mglodack/FAKE,MichalDepta/FAKE,beeker/FAKE,MichalDepta/FAKE,mglodack/FAKE,Kazark/FAKE,Kazark/FAKE,beeker/FAKE,rflechner/FAKE,rflechner/FAKE,RMCKirby/FAKE,rflechner/FAKE,RMCKirby/FAKE,MichalDepta/FAKE,MiloszKrajewski/FAKE,RMCKirby/FAKE,beeker/FAKE,Kazark/FAKE,beeker/FAKE,mglodack/FAKE,MiloszKrajewski/FAKE