Fixing errors reported by JuliaCIBot

I am trying to tag a new release of a long neglected package that I have just updated.

Using attobot I created a METADATA pull request. The travis-ci tests passed but the JuliaCIBot tests failed

Looking the the log I see that it failed trying to set up Python and matplotlib (my package uses PyPlot)

I have no idea how to try to fix this. Presumably I am missing something but I cannot find any information about JuliaCIBot, what it tests, and how it is used. Can someone give me some pointers? Cheers.

Just ignore it.