On 19 June 2018 at 22:55, Cyril Ferlicot D. <[email protected]>
wrote:

> Hi,
>
> Since months now there are a lot of random failure on the CI making it
> hard to work.
>
> There is different kind of failures:
> - Network problems
> - Failing tests
> - Incomprehensible problems
>
> Now I don't see much failure due to Network. I suppose the Inria
> infrastructure improved.
>
> Failing tests were corrected those past months and we see less and less
> of them.
>
> Now the big problem are the incomprehensible crashes such as "The
> workspace was not found" or "FileDoesNotExistException" or "pharo-vm/ is
> already present".
>
> We just found the problem :)
>
> During the validation of the Bootstrap multiple tests are launched on
> OSX/Windows/linux in parallel. Each task is on a different slave of the
> Jenkins. But, apparently we discovered that two slaves could have the
> same disk. Usually it does not cause any trouble since a job is only run
> by one slave. But in this particular case, two slaves can be used by the
> same job and mess with the resources of each other.
>

That sort of outside-the-box confounding factor is difficult and
frustrating
to track down. Great work guys.

cheers -ben

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