Build failed in Jenkins: Mesos-Reviewbot #19595

[Apache Jenkins Server]

See <https://builds.apache.org/job/Mesos-Reviewbot/19595/display/redirect>

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[URLTrigger] A change within the response URL invocation (log)
[EnvInject] - Loading node environment variables.
Building remotely on H18 (ubuntu xenial) in workspace 
<https://builds.apache.org/job/Mesos-Reviewbot/ws/>
 > git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
 > git config remote.origin.url 
 > https://git-wip-us.apache.org/repos/asf/mesos.git # timeout=10
Fetching upstream changes from https://git-wip-us.apache.org/repos/asf/mesos.git
 > git --version # timeout=10
 > git fetch --tags --progress 
 > https://git-wip-us.apache.org/repos/asf/mesos.git 
 > +refs/heads/*:refs/remotes/origin/*
 > git rev-parse origin/master^{commit} # timeout=10
Checking out Revision 89c6cea11427fef36b0161620c451d0587f1d205 (origin/master)
Commit message: "Validated that quota requests contain unique resource names."
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 89c6cea11427fef36b0161620c451d0587f1d205
 > git rev-list 89c6cea11427fef36b0161620c451d0587f1d205 # timeout=10
 > git tag -a -f -m Jenkins Build #19595 jenkins-Mesos-Reviewbot-19595 # 
 > timeout=10
[EnvInject] - Executing scripts and injecting environment variables after the 
SCM step.
[EnvInject] - Injecting as environment variables the properties content 
USERNAME=mesos-review

[EnvInject] - Variables injected successfully.
[EnvInject] - Mask passwords that will be passed as build parameters.
[Mesos-Reviewbot] $ /bin/bash -xe /tmp/jenkins7264502436398675017.sh
+ date
Wed Sep 27 22:09:05 UTC 2017
+ pip install --user virtualenv
Requirement already satisfied: virtualenv in 
/home/jenkins/.local/lib/python2.7/site-packages
+ ./support/mesos-style.py
Total errors found: 0
************* Module setup
R:  1, 0: Similar lines in 2 files
==cli.plugins.agent.main:46
==cli.plugins.task.main:45
        }
    }

    def list(self, argv):
        """
        List the tasks running in a cluster by checking the /tasks endpoint.
        """
        # pylint: disable=unused-argument
        try:
            master = self.config.master()
        except Exception as exception:
            raise CLIException("Unable to get leading master address: {error}"
                               .format(error=exception))

        try: (duplicate-code)
R:  1, 0: Similar lines in 2 files
==cli.tests.agent:38
==cli.tests.task:39
    def test_list(self):
        """
        Basic test for the task `list()` sub-command.
        """
        # Launch a master, agent, and task.
        master = Master()
        master.launch()

        agent = Agent()
        agent.launch()
 (duplicate-code)
R:  1, 0: Similar lines in 2 files
==cli.tests.task:44
==cli.tests.tests:37
        master = Master()
        master.launch()

        agent = Agent()
        agent.launch()

        task = Task({"command": "sleep 1000"})
        task.launch()
 (duplicate-code)
R:  1, 0: Similar lines in 2 files
==cli.plugins.agent.main:60
==cli.util:193
        try:
            agents = http.get_json(master, "slaves")["slaves"]
        except Exception as exception:
            raise CLIException("Could not open '/slaves'"
                               " endpoint at '{addr}': {error}" (duplicate-code)
Total errors found: 52
Checking 1207 C++ files
Rebuilding virtualenv ...
Checking 28 Python files
Build step 'Execute shell' marked build as failure