Build failed in Jenkins: cloudstack-marvin #837

[Apache Jenkins Server]

See <https://builds.apache.org/job/cloudstack-marvin/837/>

------------------------------------------
Started by upstream project "cloudstack-apidocs-master" build number 659
originally caused by: 
 Started by upstream project "cloudstack-master-maven" build number 1362
 originally caused by: 
  Started by an SCM change
  Started by an SCM change
  Started by an SCM change
  Started by an SCM change
  Started by an SCM change
  Started by an SCM change
  Started by an SCM change
  Started by an SCM change
  Started by an SCM change
  Started by an SCM change
  Started by an SCM change
  Started by an SCM change
Building remotely on ubuntu2 in workspace 
<https://builds.apache.org/job/cloudstack-marvin/ws/>
Checkout:cloudstack-marvin / 
<https://builds.apache.org/job/cloudstack-marvin/ws/> - 
hudson.remoting.Channel@59f95962:ubuntu2
Using strategy: Default
Last Built Revision: Revision 21a62719140acea4d2ab02cd610bc00a38bdd6eb 
(origin/master)
Cloning the remote Git repository
Cloning repository https://git-wip-us.apache.org/repos/asf/cloudstack.git
git --version
git version 1.7.9.5
Fetching upstream changes from 
https://git-wip-us.apache.org/repos/asf/cloudstack.git
Commencing build of Revision c05c1052f516178d75b667cbc1c060c85265692d 
(origin/master)
Checking out Revision c05c1052f516178d75b667cbc1c060c85265692d (origin/master)
FATAL: Could not apply tag jenkins-cloudstack-marvin-837
hudson.plugins.git.GitException: Could not apply tag 
jenkins-cloudstack-marvin-837
        at hudson.plugins.git.GitAPI.tag(GitAPI.java:829)
        at hudson.plugins.git.GitSCM$4.invoke(GitSCM.java:1270)
        at hudson.plugins.git.GitSCM$4.invoke(GitSCM.java:1231)
        at hudson.FilePath$FileCallableWrapper.call(FilePath.java:2348)
        at hudson.remoting.UserRequest.perform(UserRequest.java:118)
        at hudson.remoting.UserRequest.perform(UserRequest.java:48)
        at hudson.remoting.Request$2.run(Request.java:326)
        at 
hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
        at java.util.concurrent.FutureTask.run(FutureTask.java:166)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:679)
Caused by: hudson.plugins.git.GitException: Command "git tag -a -f -m Jenkins 
Build #837 jenkins-cloudstack-marvin-837" returned status code 128:
stdout: 
stderr: 
*** Please tell me who you are.

Run

  git config --global user.email "y...@example.com"
  git config --global user.name "Your Name"

to set your account's default identity.
Omit --global to set the identity only in this repository.

fatal: empty ident  <jenk...@vesta.apache.org> not allowed

        at hudson.plugins.git.GitAPI.launchCommandIn(GitAPI.java:897)
        at hudson.plugins.git.GitAPI.launchCommand(GitAPI.java:858)
        at hudson.plugins.git.GitAPI.launchCommand(GitAPI.java:868)
        at hudson.plugins.git.GitAPI.tag(GitAPI.java:827)
        ... 12 more