Buildbot failure in Wildebeest Builder on whole buildset

[Mark Wielaard]

On Sun, Sep 12, 2021 at 11:16:09PM +0000, buildbot@builder.wildebeest.org wrote:
> The Buildbot has detected a new failure on builder elfutils-fedora-s390x while building elfutils.
> Full details are available at:
>     https://builder.wildebeest.org/buildbot/#builders/10/builds/795
> 
> Buildbot URL: https://builder.wildebeest.org/buildbot/
> 
> Worker for this Build: fedora-s390x

This is the same failure we saw on fedora-ppc64 and centos-x86_64 yesterday.
https://builder.wildebeest.org/buildbot/#/builders/10/builds/795/steps/8/logs/test-suite_log

I still don't understand why. In the logs we can see (for the PORT2 server):

[Sun Sep 12 22:56:26 2021] (1493056/1493066): recorded buildid=a0a48245eb29786f7b6853df68ab23cb608b344b file=/home/mjw/bb/wildebeest/elfutils-fedora-s390x/build/tests/dwfllines mtime=1631486319 atype=ED

But then, 2 seconds later:
[Sun Sep 12 22:56:28 2021] (1493056/1493388): searching for buildid=a0a48245eb29786f7b6853df68ab23cb608b344b artifacttype=debuginfo suffix=
[Sun Sep 12 22:56:28 2021] (1493056/1493388): not found
[Sun Sep 12 22:56:28 2021] (1493056/1493388): 127.0.0.1:47886 UA:elfutils/0.185,Linux/s390x,fedora/34 XFF: GET /buildid/a0a48245eb29786f7b6853df68ab23cb608b344b/debuginfo 404 9 0+2ms

Somewhere inbetween the buildid seems to have been forgotten. But I
cannot figure out why or where. It is clearly non-deterministic since
normally the tests PASS.

Cheers,

Mark