Try to nuke ~/.dub once

[wilzbach]

Required for dlang/phobos#5921

[dlang-bot]

Thanks for your pull request, @wilzbach!

[wilzbach]

On a second thought. We already use a local mirror, so let's see whether this adds a noticeable time to Jenkins, it's quite likely that we run into issues with this again & either doing a PR to nuke ~/.dub (or waiting for the worker to die and be "resurrected") doesn't sound like the best idea.

[MartinNowak]

The was not related to fetched ddox packages last time I debugged sth. similar. It was rather a hardcoded fetch in dub's test-suite or so.

And no deleting ~/.dub is not OK, packages have to be re-downloaded from github.
That's also the wrong place to delete .dub (it's on the node that builds dlang), we use one .dub folder per concurrent test runner (Jenkins workspace).

[wilzbach]

Sorry - it was just an experiment.

[MartinNowak]

No worries, just wanted to let you know why we cache things.

[MartinNowak]

I've manually deleted ddox-* on all slaves.