Yes the scan starts and runs to completion. It is correctly detecting other files which I have changed but these ones I did not.
I checked the SVN logs for one of the plugins above and it would seem that the developers changed the readme since tagging the change so although the 2 files are different it's the repository version that is changed not my copy. I've not checked but this could be the case for the other files.
https://plugins.trac.wordpress.org/changeset/847617/better-delete-revision