Upgrading to 4.37 and all my job configs have had the warning parser removed, resulting in every job failing with this exception.
ERROR: Publisher hudson.plugins.warnings.WarningsPublisher aborted due to exception
java.io.IOException: Error: No warning parsers defined in the job configuration.
at hudson.plugins.warnings.WarningsPublisher.perform(WarningsPublisher.java:316)
at hudson.plugins.analysis.core.HealthAwareRecorder.perform(HealthAwareRecorder.java:333)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:781)
at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:753)
at hudson.model.Build$BuildExecution.post2(Build.java:183)
at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:706)
at hudson.model.Run.execute(Run.java:1704)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:230)