Subject: Re: bug#33152: Indeterministic test failure in qemu-minimal

From: Gábor Boskovits <[email-masked]>
Date: Fri, 26 Oct 2018 20:24:32 +0200

Hello Ludo,

Ludovic Courtès <[email-masked]> ezt írta (időpont: 2018. okt. 26., P, 19:58):
>
> Hello Gábor,
>
> (Should we be Cc’ing this to Edouard?)
>

Yes, and done.

> Gábor Boskovits <[email-masked]> skribis:
>
> > ERROR:tests/test-replication.c:117:test_blk_write: assertion failed:
> > (async_ret == 0)
> > FAIL
> > GTester: last random seed: R02Sb499c9e89b18bb967dd59acad1b2aaa8
> > (pid=14865)
> >   /replication/secondary/stop:                                         OK
> >   /replication/secondary/do_checkpoint:                                OK
> >   /replication/secondary/get_error_all:                                OK
> > FAIL: tests/test-replication
> > make: *** [/tmp/guix-build-qemu-minimal-2.10.2.drv-0/qemu-2.10.2/tests/Makefile.include:849:
>
> […]
>
> > builder for `/gnu/store/5q7ixx1qjf7msamr052jc5jyfilhpsai-qemu-minimal-2.10.2.drv' failed with exit code 1 cannot build derivation
>
> Which Guix version is it, as reported by ‘guix describe’ or ‘guix
> --version’?  (We’ve been providing QEMU 3.0 since August 2018, commit
> 5dc8437fc0ff3dedf75de2183e3bf9d493e4aa81, so this must be close to
> 0.15.0.)
>

Edouard, could you please provide the requested details.

> This may be a non-deterministic build failure, which shows up because
> hydra.gnu.org is currently off-line and so substitutes are unavailable.
>

I have a feeling, that this could well happen on the build farm, as it seems
that there is indeterministic behaviour in the testsuite. Having the substitutes
availble would only hide the bug. WDYT?

> Thanks,
> Ludo’.

Best regards,
g_bor