Consistent CI failure in job nightly-i386-linux-deb9-validate

[Bryan Richter]

Yep, it seems to mostly be xz that is running out of memory. (All recent
builds that I sampled, but not all builds through all time.) Thanks for
pointing it out!

I can revert the change.

On Wed, Sep 28, 2022 at 11:46 AM Cheng Shao <cheng.shao at tweag.io> wrote:

> Hi Bryan,
>
> This may be an unintended fallout of !8940. Would you try starting an
> i386 pipeline with it reversed to see if it solves the issue, in which
> case we should revert or fix it in master?
>
> On Wed, Sep 28, 2022 at 9:58 AM Bryan Richter via ghc-devs
> <ghc-devs at haskell.org> wrote:
> >
> > Hi all,
> >
> > For the past week or so, nightly-i386-linux-deb9-validate has been
> failing consistently.
> >
> > They show up on the failure dashboard because the logs contain the
> phrase "Cannot allocate memory".
> >
> > I haven't looked yet to see if they always fail in the same place, but
> I'll do that soon. The first example I looked at, however, has the line
> "xz: (stdin): Cannot allocate memory", so it's not GHC (alone) causing the
> problem.
> >
> > As a consequence of showing up on the dashboard, the jobs get restarted.
> Since they fail consistently, they keep getting restarted. Since the jobs
> keep getting restarted, the pipelines stay alive. When I checked just now,
> there were 8 nightly runs still running. :) Thus I'm going to cancel the
> still-running nightly-i386-linux-deb9-validate jobs and let the pipelines
> die in peace. You can still find all examples of failed jobs on the
> dashboard:
> >
> >
> https://grafana.gitlab.haskell.org/d/167r9v6nk/ci-spurious-failures?orgId=2&from=now-90d&to=now&refresh=5m&var-types=cannot_allocate
> >
> > To prevent future problems, it would be good if someone could help me
> look into this. Otherwise I'll just disable the job. :(
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>
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