Setting as null
instance of java.lang.Thread(name='Handling GET /astro-team.teams/job/astro-team/job/Plugins/job/Others/job/cloudbees-assurance-plugin/view/change-requests/job/PR-214/findbugs/trendGraph/png from 172.18.64.72 : RequestHandlerThread[#20]', id=1468)"Handling GET /astro-team.teams/job/astro-team/job/Plugins/job/Others/job/cloudbees-assurance-plugin/view/change-requests/job/PR-214/findbugs/trendGraph/png from 172.18.64.72 : RequestHandlerThread[#20]" RUNNING
        at java.lang.Thread.setContextClassLoader(Thread.java:1472)
        at com.sun.imageio.stream.StreamCloser$2.run(StreamCloser.java:100)
        at java.security.AccessController.doPrivileged(Native Method)
        at com.sun.imageio.stream.StreamCloser.addToQueue(StreamCloser.java:84)
        at javax.imageio.stream.FileCacheImageOutputStream.<init>(FileCacheImageOutputStream.java:95)
        at com.sun.imageio.spi.OutputStreamImageOutputStreamSpi.createOutputStreamInstance(OutputStreamImageOutputStreamSpi.java:68)
        at javax.imageio.ImageIO.createImageOutputStream(ImageIO.java:419)
        at javax.imageio.ImageIO.write(ImageIO.java:1572)
        at hudson.util.Graph.doPng(Graph.java:123)
        at java.lang.invoke.LambdaForm$DMH.1906506525.invokeVirtual_L3_V(Native Method)
        at java.lang.invoke.LambdaForm$BMH.1308336506.reinvoke(Native Method)
        at java.lang.invoke.LambdaForm$MH.1488839461.invoker(Native Method)
        at java.lang.invoke.LambdaForm$MH.1368689568.invokeExact_MT(Native Method)
        at java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:627)
        at org.kohsuke.stapler.Function$MethodFunction.invoke(Function.java:343)
        at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:184)
        at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:117)
        at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:129)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:734)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:864)
        at org.kohsuke.stapler.MetaClass$3.doDispatch(MetaClass.java:209)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:734)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:864)
        at org.kohsuke.stapler.MetaClass$10.dispatch(MetaClass.java:374)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:734)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:864)
        at org.kohsuke.stapler.MetaClass$5.doDispatch(MetaClass.java:248)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:734)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:864)
        at org.kohsuke.stapler.MetaClass$5.doDispatch(MetaClass.java:248)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:734)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:864)
        at org.kohsuke.stapler.MetaClass$5.doDispatch(MetaClass.java:248)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:734)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:864)
        at org.kohsuke.stapler.MetaClass$5.doDispatch(MetaClass.java:248)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:734)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:864)
        at org.kohsuke.stapler.MetaClass$5.doDispatch(MetaClass.java:248)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:734)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:864)
        at org.kohsuke.stapler.MetaClass$5.doDispatch(MetaClass.java:248)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:734)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:864)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:668)
        at org.kohsuke.stapler.Stapler.service(Stapler.java:238)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
        at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:865)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1655)
        at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:154)
        at com.cloudbees.analytics.client.jira.ApiProxyFilter.doFilter(ApiProxyFilter.java:45)
        at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
        at jenkins.metrics.impl.MetricsFilter.doFilter(MetricsFilter.java:125)
        at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
        at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:157)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
        at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:105)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
        at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
        at jenkins.security.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:117)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
        at org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
        at org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
        at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
        at jenkins.security.BasicHeaderProcessor.doFilter(BasicHeaderProcessor.java:93)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
        at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
        at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:67)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
        at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:90)
        at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:171)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
        at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
        at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
        at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642)
        at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:533)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)
        at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:524)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
        at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
        at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1317)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
        at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473)
        at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1219)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
        at org.eclipse.jetty.server.Server.handle(Server.java:531)
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:352)
        at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260)
        at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:281)
        at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:102)
        at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)
        at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366)
        at winstone.BoundedExecutorService.lambda$scheduleNext$0(BoundedExecutorService.java:80)
        at winstone.BoundedExecutorService$$Lambda$24.1069350529.run
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)