Hugo tells that pages have been created, although they're not

There’s something I don’t quite understand about rendering a Hugo site. If I run the ‘hugo’ command for a test site, I get this output:

2 of 2 drafts rendered
0 future content
0 expired content
3 regular pages created
8 other pages created
0 non-page files copied
0 paginator pages created
0 tags created
0 categories created

I noticed that it mentions ‘3 regular pages created’, even when these pages are not actually created. In this case, I didn’t have a layouts/blog folder, so my content/blog pages where not created. I didn’t understand why the pages where not created, since Hugo told me they were. If I then finally spot the error, and created a layouts/blog/single.html page. This of course fixed the problem. I know, it’s probably a newbie thing.

But, then again, why is the Hugo -D output the same?

2 of 2 drafts rendered
0 future content
0 expired content
3 regular pages created
8 other pages created
0 non-page files copied
0 paginator pages created
0 tags created
0 categories created

Shouldn’t it say ‘0 regular pages created’ and, perhaps even better, mention that a corresponding layout wasn’t found for some content? That would be useful, I think. Or maybe I’m misssing something here.

Can you share the sources of a test site that reproduces this problem?