As far as I can tell, anything sent to cpan testers is generated by specially configuring cpan,cpanp or cpanm to do so. This happens when you then go and install a module using your tool of choice. People can also choose to smoke test modules, configuring cpan or cpanp to go ahead and just automatically download and test modules, reporting as it goes.

• http://wiki.cpantesters.org/
• http://wiki.cpantesters.org/wiki/QuickStart

Update: So the reports for this look weird, if I get the time later I'll take a look later if I don't forget.