The Ubuntu jenkins builds are configured in dsl to report cppcheck errors by default, and I can see the xml files generated in the workspace of several jobs that includes some errors, but these are not reported by jenkins in the summary of that job. For example, the following job has errors in the cpplint.xml but does not report these error in the job summary, and is marked as a clean build:

• https://build.osrfoundation.org/job/ignition_physics-ci-main-bionic-amd64/ws/build/cppcheck_results/cpplint.xml
• https://build.osrfoundation.org/job/ignition_physics-ci-main-bionic-amd64/