FailedConsole Output

GitHub pull request #8 of commit 3da6d640dc1a7300436dc78816860e32cb5bb1d7 automatically merged.
[EnvInject] - Loading node environment variables.
Building remotely on amp-jenkins-worker-07 (centos) in workspace /home/jenkins/workspace/ampcrowd
Cloning the remote Git repository
Cloning repository https://github.com/amplab/ampcrowd.git
 > git init /home/jenkins/workspace/ampcrowd # timeout=10
Fetching upstream changes from https://github.com/amplab/ampcrowd.git
 > git --version # timeout=10
 > git fetch --tags --progress https://github.com/amplab/ampcrowd.git +refs/heads/*:refs/remotes/origin/*
 > git config remote.origin.url https://github.com/amplab/ampcrowd.git # timeout=10
 > git config --add remote.origin.fetch +refs/heads/*:refs/remotes/origin/* # timeout=10
 > git config remote.origin.url https://github.com/amplab/ampcrowd.git # timeout=10
Fetching upstream changes from https://github.com/amplab/ampcrowd.git
 > git fetch --tags --progress https://github.com/amplab/ampcrowd.git +refs/heads/*:refs/remotes/origin/*
 > git rev-parse origin/pr/8/merge^{commit} # timeout=10
FATAL: Command "git rev-parse origin/pr/8/merge^{commit}" returned status code 128:
stdout: origin/pr/8/merge^{commit}

stderr: fatal: ambiguous argument 'origin/pr/8/merge^{commit}': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions

hudson.plugins.git.GitException: Command "git rev-parse origin/pr/8/merge^{commit}" returned status code 128:
stdout: origin/pr/8/merge^{commit}

stderr: fatal: ambiguous argument 'origin/pr/8/merge^{commit}': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions

	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:1591)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:1567)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:1563)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommand(CliGitAPIImpl.java:1249)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommand(CliGitAPIImpl.java:1261)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.revParse(CliGitAPIImpl.java:622)
	at hudson.plugins.git.GitAPI.revParse(GitAPI.java:316)
	at sun.reflect.GeneratedMethodAccessor72.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at hudson.remoting.RemoteInvocationHandler$RPCRequest.perform(RemoteInvocationHandler.java:326)
	at hudson.remoting.RemoteInvocationHandler$RPCRequest.call(RemoteInvocationHandler.java:301)
	at hudson.remoting.RemoteInvocationHandler$RPCRequest.call(RemoteInvocationHandler.java:260)
	at hudson.remoting.UserRequest.perform(UserRequest.java:121)
	at hudson.remoting.UserRequest.perform(UserRequest.java:49)
	at hudson.remoting.Request$2.run(Request.java:325)
	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:68)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)
	at ......remote call to amp-jenkins-worker-07(Native Method)
	at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1360)
	at hudson.remoting.UserResponse.retrieve(UserRequest.java:221)
	at hudson.remoting.Channel.call(Channel.java:753)
	at hudson.remoting.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:179)
	at com.sun.proxy.$Proxy56.revParse(Unknown Source)
	at org.jenkinsci.plugins.gitclient.RemoteGitImpl.revParse(RemoteGitImpl.java:546)
	at hudson.plugins.git.RevisionParameterAction.toRevision(RevisionParameterAction.java:85)
	at hudson.plugins.git.GitSCM.determineRevisionToBuild(GitSCM.java:903)
	at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1017)
	at hudson.scm.SCM.checkout(SCM.java:484)
	at hudson.model.AbstractProject.checkout(AbstractProject.java:1270)
	at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:609)
	at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:86)
	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:531)
	at hudson.model.Run.execute(Run.java:1741)
	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
	at hudson.model.ResourceController.execute(ResourceController.java:98)
	at hudson.model.Executor.run(Executor.java:374)
ERROR: Failed to set Jenkins Identity header on email.
java.lang.NullPointerException
	at org.jenkinsci.main.modules.instance_identity.InstanceIdentity.get(InstanceIdentity.java:126)
	at jenkins.plugins.mailer.tasks.MimeMessageBuilder.setJenkinsInstanceIdent(MimeMessageBuilder.java:188)
	at jenkins.plugins.mailer.tasks.MimeMessageBuilder.buildMimeMessage(MimeMessageBuilder.java:166)
	at hudson.tasks.MailSender.createEmptyMail(MailSender.java:391)
	at hudson.tasks.MailSender.createFailureMail(MailSender.java:260)
	at hudson.tasks.MailSender.createMail(MailSender.java:178)
	at hudson.tasks.MailSender.run(MailSender.java:107)
	at hudson.tasks.Mailer.perform(Mailer.java:141)
	at hudson.tasks.BuildStepCompatibilityLayer.perform(BuildStepCompatibilityLayer.java:74)
	at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
	at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:761)
	at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:721)
	at hudson.model.Build$BuildExecution.post2(Build.java:183)
	at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:670)
	at hudson.model.Run.execute(Run.java:1766)
	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
	at hudson.model.ResourceController.execute(ResourceController.java:98)
	at hudson.model.Executor.run(Executor.java:374)
Sending e-mails to: dhaas@cs.berkeley.edu
Test FAILed.
Refer to this link for build results (access rights to CI server needed): 
https://amplab.cs.berkeley.edu/jenkins/job/ampcrowd/7/
Test FAILed.
Finished: FAILURE