Problem when building the doc page

[JJ]

Here's the log.
I can't reproduce it with perl6 2018.04. Maybe it's a version-specific thing.

[JJ]

I can't reproduce it locally. In my system, it's not creating the 0-html-source directory, while remotely it is...
If I delete thar directory by hand it works, but I don't know why it's creating it...