Perl6 jobs are not routed to Xenial image

I’m testing a Perl 6 module. I know that the Perl 6 container is community-supported, but in this case I think it’s an environment issue.

I was trying to install a library in order to test my module, but I always received an error about the Ubuntu package installation.
After a lot of attempts, I finally decided to run sudo cat /etc/apt/sources.list.
While the Build system information section states Build dist: xenial, I found that the output of sudo cat /etc/apt/sources.list listed precise repositories instead of the xenial ones.

Here’s the link to my last build:


Indeed, same case with my build that needs liblmdb0.

With dist: xenial, the build choose to uses precise: