Started by upstream project "CE_gpkit_PR_research_models" build number 425
originally caused by:
 GitHub pull request #1475 of commit 840cc53d778a55b113c0323a9876695f05df7c97, no merge conflicts.
Running as SYSTEM
[EnvInject] - Loading node environment variables.
Building remotely on macys_VM in workspace /Users/jenkins/workspace/CE_gpkit_PR_research_models/buildnode/macys_VM/optimizer/mosek
No credentials specified
Wiping out workspace first.
Cloning the remote Git repository
Cloning repository https://github.com/convexengineering/gpkit
 > git init /Users/jenkins/workspace/CE_gpkit_PR_research_models/buildnode/macys_VM/optimizer/mosek # timeout=10
Fetching upstream changes from https://github.com/convexengineering/gpkit
 > git --version # timeout=10
 > git fetch --tags --progress -- https://github.com/convexengineering/gpkit +refs/heads/*:refs/remotes/origin/* # timeout=10
 > git config remote.origin.url https://github.com/convexengineering/gpkit # timeout=10
 > git config --add remote.origin.fetch +refs/heads/*:refs/remotes/origin/* # timeout=10
 > git config remote.origin.url https://github.com/convexengineering/gpkit # timeout=10
Fetching upstream changes from https://github.com/convexengineering/gpkit
 > git fetch --tags --progress -- https://github.com/convexengineering/gpkit +refs/pull/*:refs/remotes/origin/pr/* +refs/heads/master:refs/remotes/origin/master # timeout=10
Merging Revision cb74cd012755ade2a668b5a33b6709488afa24c6 (refs/remotes/origin/pr/1475/merge) to origin/master, UserMergeOptions{mergeRemote='origin', mergeTarget='master', mergeStrategy='DEFAULT', fastForwardMode='FF'}
 > git rev-parse origin/master^{commit} # timeout=10
 > git config core.sparsecheckout # timeout=10
 > git checkout -f origin/master # timeout=3
 > git remote # timeout=10
 > git config --get remote.origin.url # timeout=10
 > git merge --ff cb74cd012755ade2a668b5a33b6709488afa24c6 # timeout=10
 > git config core.sparsecheckout # timeout=10
 > git checkout -f cb74cd012755ade2a668b5a33b6709488afa24c6 # timeout=3
FATAL: Could not checkout cb74cd012755ade2a668b5a33b6709488afa24c6
hudson.plugins.git.GitException: Command "git checkout -f cb74cd012755ade2a668b5a33b6709488afa24c6" returned status code 128:
stdout: 
stderr: fatal: reference is not a tree: cb74cd012755ade2a668b5a33b6709488afa24c6

	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:2429)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.access$1100(CliGitAPIImpl.java:80)
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$9.execute(CliGitAPIImpl.java:2742)
Also:   hudson.remoting.Channel$CallSiteStackTrace: Remote call to macys_VM
		at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1741)
		at hudson.remoting.UserRequest$ExceptionResponse.retrieve(UserRequest.java:356)
		at hudson.remoting.Channel.call(Channel.java:955)
		at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler.execute(RemoteGitImpl.java:146)
		at sun.reflect.GeneratedMethodAccessor337.invoke(Unknown Source)
		at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
		at java.lang.reflect.Method.invoke(Method.java:498)
		at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler.invoke(RemoteGitImpl.java:132)
		at com.sun.proxy.$Proxy125.execute(Unknown Source)
		at hudson.plugins.git.extensions.impl.PreBuildMerge.decorateRevisionToBuild(PreBuildMerge.java:89)
		at hudson.plugins.git.GitSCM.determineRevisionToBuild(GitSCM.java:1062)
		at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1160)
		at hudson.scm.SCM.checkout(SCM.java:505)
		at hudson.model.AbstractProject.checkout(AbstractProject.java:1205)
		at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:574)
		at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:86)
		at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:499)
		at hudson.model.Run.execute(Run.java:1853)
		at hudson.matrix.MatrixRun.run(MatrixRun.java:153)
		at hudson.model.ResourceController.execute(ResourceController.java:97)
		at hudson.model.Executor.run(Executor.java:427)
Caused: hudson.plugins.git.GitException: Could not checkout cb74cd012755ade2a668b5a33b6709488afa24c6
	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$9.execute(CliGitAPIImpl.java:2766)
	at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler$GitCommandMasterToSlaveCallable.call(RemoteGitImpl.java:161)
	at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler$GitCommandMasterToSlaveCallable.call(RemoteGitImpl.java:154)
	at hudson.remoting.UserRequest.perform(UserRequest.java:211)
	at hudson.remoting.UserRequest.perform(UserRequest.java:54)
	at hudson.remoting.Request$2.run(Request.java:369)
	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Recording test results
ERROR: Step ‘Publish JUnit test result report’ failed: No test report files were found. Configuration error?
[WS-CLEANUP] Deleting project workspace...
[WS-CLEANUP] Deferred wipeout is used...
[WS-CLEANUP] done
Finished: FAILURE