Thread #1 BLOCKED on hudson.model.RunMap owned by Thread #2
    at jenkins.model.lazy.AbstractLazyLoadRunMap.load(AbstractLazyLoadRunMap.java:648)
    -  blocked on hudson.model.RunMap
    at jenkins.model.lazy.AbstractLazyLoadRunMap.search(AbstractLazyLoadRunMap.java:381)
    at jenkins.model.lazy.AbstractLazyLoadRunMap.getByNumber(AbstractLazyLoadRunMap.java:546)
    at hudson.model.AbstractProject.getBuildByNumber(AbstractProject.java:1073)
    at hudson.model.AbstractProject.getBuildByNumber(AbstractProject.java:156)
    at hudson.model.Run.fromExternalizableId(Run.java:2231)
    at hudson.diagnosis.OldDataMonitor$RunSaveableReference.get(OldDataMonitor.java:361)
    at hudson.diagnosis.OldDataMonitor.getData(OldDataMonitor.java:90)
    ...

Thread #2 BLOCKED on hudson.diagnosis.OldDataMonitor owned by Thread #1
    at hudson.diagnosis.OldDataMonitor.report(OldDataMonitor.java:200)
    -  blocked on hudson.diagnosis.OldDataMonitor
    at hudson.util.RobustReflectionConverter.doUnmarshal(RobustReflectionConverter.java:327)
    at ...(loading a Run)...