output result / failures somewhere (in git-lock.xml?)

[DrRataplan]

Now, when an incremental update fails, the error is written to the log, and to the request. But if this incremental upgrade was kicked off a long time ago, it's almost impossible to see why it was broken.

Can we serialize the result somewhere? The git-lock.xml file seems like a good place?

[line-o]

Yes that is a great idea. Let's do this!
Could you give us an idea how this should be serialized?