Hi,

I Have a big matrix with a lot of jobs and I run it with daily builds and 
nightly builds.

The daily builds trigger only a small part of the matrix and everything 
work fine.
The nightly builds trigger all the matrix and every jobs in this matrix 
fail with this trace in the console:

Started by upstream project "Windows Results" build number 12418
> originally caused by:
>  Started by upstream project "Supervisor Test Windows Nightly" build number 
> 615
>  originally caused by:
>   Started by upstream project "Nightly Build Hoops 3DX main line Windows 64" 
> build number 541
>   originally caused by:
>    Started by an SCM change
> Building remotely on Slave2
> FATAL: null
> java.lang.NullPointerException
>       at 
> net.praqma.jenkins.plugin.reloaded.Util.getUpstreamRebuildAction(Util.java:84)
>       at 
> net.praqma.jenkins.plugin.reloaded.Util.getDownstreamRebuildActionFromMatrixBuild(Util.java:63)
>       at 
> net.praqma.jenkins.plugin.reloaded.MatrixReloadedEnvironmentContributor.buildEnvironmentFor(MatrixReloadedEnvironmentContributor.java:44)
>       at hudson.model.Run.getEnvironment(Run.java:2045)
>       at hudson.model.AbstractBuild.getEnvironment(AbstractBuild.java:931)
>       at 
> hudson.matrix.MatrixRun$MatrixRunExecution.decideWorkspace(MatrixRun.java:175)
>       at 
> hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:567)
>       at hudson.model.Run.execute(Run.java:1575)
>       at hudson.matrix.MatrixRun.run(MatrixRun.java:146)
>       at hudson.model.ResourceController.execute(ResourceController.java:88)
>       at hudson.model.Executor.run(Executor.java:237)
>
>
I used to have a problem like this before, but the error was not the same. 
It was:

    EnvInject - Loading node environment variables.
>     EnvInject - ERROR - SEVERE ERROR occurs: null
>
>
I removed the envInject plugin and I have the new error.

I think there is a problem with the heavy load on the jenkins master who 
can't handle too many builds, but I'm not sure. It's seems that the only 
difference between daily and nightly is this heavy load.

Is it possible that my builds fail because there is too many simultaneous 
builds? Or because of the heavy load on jenkins master?

Thanks for your help.

Louis

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