Build failed in Jenkins: River-QA-runtime #61

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See <https://builds.apache.org/hudson/job/River-QA-runtime/61/>

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Started by an SCM change
Building remotely on solaris2
java.io.IOException: Failed to mkdirs: 
<https://builds.apache.org/hudson/job/River-QA-runtime/ws/>
        at hudson.FilePath.mkdirs(FilePath.java:817)
        at hudson.model.AbstractProject.checkout(AbstractProject.java:1179)
        at 
hudson.model.AbstractBuild$AbstractRunner.checkout(AbstractBuild.java:536)
        at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:424)
        at hudson.model.Run.run(Run.java:1374)
        at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
        at hudson.model.ResourceController.execute(ResourceController.java:88)
        at hudson.model.Executor.run(Executor.java:145)
Archiving artifacts