[Python-modules-team] Bug#923826: python-blessed: FTBFS randomly (failing tests)

Pierre-Elliott Bécue peb at debian.org
Sun May 5 18:13:48 BST 2019

Le dimanche 05 mai 2019 à 16:23:10+0200, Santiago Vila a écrit :
> On Sun, May 05, 2019 at 02:07:32AM +0200, Pierre-Elliott Bécue wrote:
> > > I've put several failed build logs here for reference:
> > > 
> > > https://people.debian.org/~sanvila/build-logs/python-blessed/
> > > 
> > > If you need a test machine to reproduce this, please contact me
> > > privately and I could provide ssh access to a machine where it happens
> > > (caveat: randomly and maybe with low probability).
> > > 
> > > If this is really a bug in one of the build-depends, please use reassign and affects,
> > > so that this is still visible in the BTS web page for this package.
> > 
> > Dear Santiago,
> > 
> > Thanks for your bug report.
> > 
> > I wonder what kind of build system you use. Could you give me a little
> > more intel on your environment? The status seems to be 512 when the bug
> > occurs, and this status is not connected to anything expected.
> I'm using sbuild + schroot on virtual machines from Scaleway.
> On instances of type START1-XS (with 1 GB RAM and 1 CPU), I have not
> seen it to fail yet.
> On instances of type START1-S (with 2 GB RAM and 2 CPUs), the failure
> rate is around 5%. This is enough to be quite confident that the
> error will happen if one tries enough times, and enough to report it
> as a bug, but probably not enough to make the bug RC.
> I believe the root of the problem should be some kind of race
> condition, maybe related to the fact that the machine has 2 CPUs, but
> I don't really know.
> So, the only thing I can do about this is to offer ssh access to a
> machine where this randomness happens (please contact me privately for
> details).

Thanks for offering this solution. Did you attempt to run all tests by
hand (ie a manual call to pytest), and if so, did you meet the same

I'll consider the ssh access idea.


Pierre-Elliott Bécue
GPG: 9AE0 4D98 6400 E3B6 7528  F493 0D44 2664 1949 74E2
It's far easier to fight for one's principles than to live up to them.
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