As I have already posted on the mailing list, this is a duplicate of
https://rt.cpan.org/Ticket/Display.html?id=40228 and earlier already
https://rt.cpan.org/Ticket/Display.html?id=39528 or more to the point
https://rt.cpan.org/Ticket/Display.html?id=39552.
Having reported it 2008-09-23T16:01:10 I would not expect it to be fixed
any time soon. So, Merejn, maybe it would resolve this permanent
frustration for new members of the perl community if you'd simply remove
these version snippets from your META.yml files?
Mind you, I would not even know how to fix the bug in YAML.pm since one
would first have to fix the YAML specs. This is why some in the perl
community intend to replace META.yml with META.json. But as you can
imagine, this won't happen overnight.