The jacoco plugin shows raw HTML instead of showing the coverage chart in certain views.

Steps to duplicate the problem:

• Download the reference docker image including the git-client-coverage job and plugin configurations

      git clone git://github.com/MarkEWaite/docker.git
      cd docker
      git checkout -b master-jacoco-2.0.0-bug -t origin/master-jacoco-2.0.0-bug
      sudo docker build -t master-jacoco-2.0.0-bug .
      sudo docker run -it -p 9090:8080 -p 60000:50000 master-jacoco-2.0.0-bug
      

• Build git-client-coverage job once
• Select the left axis of the "Code Coverage Trend" graph

The page which appears will show raw HTML instead of showing the expected chart or table. Refer to the attached picture to see the results.