[llvm-dev] Fwd: buildbot failure in LLVM on clang-ppc64-elf-linux2

[Bill Schmidt via llvm-dev]

On Tue, 2015-09-29 at 13:28 -0700, David Blaikie wrote:
> 
> 
> On Tue, Sep 29, 2015 at 1:13 PM, Bill Schmidt
> <wschmidt at linux.vnet.ibm.com> wrote:
>         On Tue, 2015-09-29 at 14:29 -0500, Hal Finkel wrote:
>         > [+Bill and Bill]
>         >
>         > ----- Original Message -----
>         > > From: "David Blaikie via llvm-dev"
>         <llvm-dev at lists.llvm.org>
>         > > To: "llvm-dev" <llvm-dev at lists.llvm.org>
>         > > Sent: Tuesday, September 29, 2015 12:39:02 PM
>         > > Subject: [llvm-dev] Fwd: buildbot failure in LLVM on
>         clang-ppc64-elf-linux2
>         > >
>         > >
>         > >
>         > > This buildbot appears to have been failing for several
>         weeks now (
>         > >
>         http://lab.llvm.org:8011/builders/clang-ppc64-elf-linux2/builds/19490
>         > > ). Does anyone know/own/care about it?
>         
>         Answer: yes.
>         
>         We've had it under investigation since the problem started
>         happening.
>         It was difficult to track it down.  Eventually we traced it
>         back to the
>         shrink-wrap enablement, and the developer provided a fix.  The
>         fix has
>         proven to be insufficient; it fixed a problem with a gcc-built
>         Clang,
>         but we still have a problem with a self-hosted Clang.  The
>         developer is
>         currently verifying that disabling shrink-wrap on a
>         self-hosting build
>         will resolve the problem.  If so, the change to enable
>         shrink-wrap for
>         PowerPC will be reverted at once.  If not, I believe we will
>         have to
>         XFAIL the test to let the bot start working again until we can
>         figure
>         out another cause.
> 
> 
> Thanks for the update!
>  
>         So, people have been working on this, but it is Not Good that
>         the bot
>         has been disabled for this long, 
> 
> 
> It's more than that the bot has been disabled - were it just disabled,
> I wouldn't have seen it, nor written that email. The bot has been red
> and prone to (though not always - as Renato's pointed out, a red bot
> that remains red may not send email, but purple (exception)->red (even
> if it were red before the exceptional result) does send email) send
> email on some of its failures, which adds noise to the system and
> makes it hard for developers to trust/act on buildbot results.
>  
>         and we will try to make sure this
>         doesn't happen again.  The problem has been figuring out
>         exactly what to
>         revert, which has been more difficult than usual this time.
> 
> Is there any reason the test couldn't've been XFAIL'd from the start,
> while investigation continued?

None.  We'll educate folks on this and attempt to ensure we do better
next time.

Bill
> 
> - Dave
>  
>         
>         Thanks,
>         Bill
>         
>         > >
>         > >
>         > > ---------- Forwarded message ----------
>         > > From: < llvm.buildmaster at lab.llvm.org >
>         > > Date: Mon, Sep 28, 2015 at 11:17 PM
>         > > Subject: buildbot failure in LLVM on
>         clang-ppc64-elf-linux2
>         > > To: Aaron Ballman < aaron at aaronballman.com >, Adrian
>         Prantl <
>         > > aprantl at apple.com >, Andrew Kaylor <
>         andrew.kaylor at intel.com >,
>         > > Artem Belevich < tra at google.com >, Artur Pilipenko <
>         > > apilipenko at azulsystems.com >, Dan Gohman <
>         dan433584 at gmail.com >,
>         > > Daniel Jasper < djasper at google.com >, Daniel Sanders <
>         > > daniel.sanders at imgtec.com >, David Blaikie <
>         dblaikie at gmail.com >,
>         > > Evgeniy Stepanov < eugeni.stepanov at gmail.com >, Fiona
>         Glaser <
>         > > escha at apple.com >, Guillaume Papin <
>         guillaume.papin at epitech.eu >,
>         > > Matt Arsenault < Matthew.Arsenault at amd.com >, Matthias
>         Braun <
>         > > matze at braunis.de >, Philip Reames <
>         listmail at philipreames.com >,
>         > > Piotr Padlewski < prazek at google.com >, Reid Kleckner <
>         > > rnk at google.com >, Richard Trieu < rtrieu at google.com >,
>         Sanjay Patel
>         > > < spatel at rotateright.com >, Sanjoy Das <
>         > > sanjoy at playingwithpointers.com >, Sean Silva <
>         chisophugis at gmail.com
>         > > >, Weiming Zhao < weimingz at codeaurora.org >
>         > > Cc: gkistanova at gmail.com
>         > >
>         > >
>         > > The Buildbot has detected a new failure on builder
>         > > clang-ppc64-elf-linux2 while building cfe.
>         > > Full details are available at:
>         > >
>         http://lab.llvm.org:8011/builders/clang-ppc64-elf-linux2/builds/19559
>         > >
>         > > Buildbot URL: http://lab.llvm.org:8011/
>         > >
>         > > Buildslave for this Build: chinook-clangslave2
>         > >
>         > > Build Reason: scheduler
>         > > Build Source Stamp: [branch trunk] 248769
>         > > Blamelist:
>         > >
>         aaronballman,adrian,akaylor,apilipenko,arsenm,dblaikie,djasper,djg,dsanders,escha,eugenis,matze,papin_g,prazek,reames,rnk,rtrieu,sanjoy,silvas,spatel,tra,weimingz
>         > >
>         > > BUILD FAILED: failed check-all_1
>         > >
>         > > sincerely,
>         > > -The Buildbot
>         > >
>         > >
>         > >
>         > >
>         > >
>         > > _______________________________________________
>         > > LLVM Developers mailing list
>         > > llvm-dev at lists.llvm.org
>         > > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>         > >
>         >
>         
>         
>         
> 
>