[llvm-dev] Help reproducing buildbot failures

[Martin Storsjö via llvm-dev]

Hi,

(Reposting the request to llvm-dev for better visibility)

I had to revert a change today, due to test errors on some buildbots. The 
errors did seem to only happen on the ppc64be and aarch64 buildbots. I 
don't have access to a ppc64be setup to test on, but I've tried to build 
and run in a setup very similar to the one on the aarch64 buildbot, but I 
can't reproduce the errors there.

The failing test was present in SVN r351801 to r351810, in 
test/tools/llvm-objcopy/COFF/add-gnu-debuglink.test. The failing test 
looked like this:

http://lab.llvm.org:8011/builders/clang-ppc64be-linux/builds/29113/steps/ninja%20check%201/logs/FAIL%3A%20LLVM%3A%3Aadd-gnu-debuglink.test
http://lab.llvm.org:8011/builders/clang-cmake-armv8-quick/builds/9987/steps/ninja%20check%201/logs/FAIL%3A%20LLVM%3A%3Aadd-gnu-debuglink.test

Can someone with access to the buildbots (or similar systems) help 
reproducing the issue? The test output files and the full output of the 
commands in the tests would be helpful.

// Martin


On Tue, 22 Jan 2019, Martin Storsjö wrote:

> Hi,
>
> My newly added test seems to be failing on a few of the buildbots, but 
> working fine on others (including all my local test environments). Can any of 
> the buildbot maintainers help look into the issue? The issue on these 
> buildbots look like this:
>
> http://lab.llvm.org:8011/builders/clang-ppc64be-linux-lnt/builds/23635/steps/ninja%20check%201/logs/FAIL%3A%20LLVM%3A%3Aadd-gnu-debuglink.test
>
> To get a grasp of the issue, are you able to provide the temporary output 
> files of the test, and the full output of the llvm-readobj and llvm-objdump 
> commands in the test?
>
> Regards,
>
> // Martin
>
> On Tue, 22 Jan 2019, llvm.buildmaster at lab.llvm.org wrote:
>
>> The Buildbot has detected a new failure on builder clang-cmake-armv8-quick 
>> while building llvm.
>> Full details are available at:
>> http://lab.llvm.org:8011/builders/clang-cmake-armv8-quick/builds/9987
>> 
>> Buildbot URL: http://lab.llvm.org:8011/
>> 
>> Buildslave for this Build: linaro-armv8-01-arm-quick
>> 
>> Build Reason: scheduler
>> Build Source Stamp: [branch trunk] 351801
>> Blamelist: jhenderson,mstorsjo
>> 
>> BUILD FAILED: failed ninja check 1
>> 
>> sincerely,
>> -The Buildbot
>