Version: v12.9.1
Platform: 4.4.0-130-generic

We use c8 with the cobertura reporter.
Moving from node 10 to node 12 the generated XML was invalid and crashed the Jenkins Cobertura publisher.

It seems that node 12 the '(anonymous function)' now becomes '<computed>' and the '<' character is invalid inside an attribute (in the cobertura-coverage.xml).

For example:
Node12
<method name="self.cam.<computed>.handler" hits="6" signature="()V">

Node10
<method name="self.cam.(anonymous function).handler" hits="6" signature="()V">

The Jenkins error:
FATAL: Unable to parse .../builds/3622/coverage.xml
09:17:48 hudson.util.IOException2: Cannot parse coverage results
09:17:48 at hudson.plugins.cobertura.CoberturaCoverageParser.parse(CoberturaCoverageParser.java:84)
09:17:48 at hudson.plugins.cobertura.CoberturaCoverageParser.parse(CoberturaCoverageParser.java:52)
09:17:48 at hudson.plugins.cobertura.CoberturaPublisher.perform(CoberturaPublisher.java:593)
09:17:48 at hudson.tasks.BuildStepCompatibilityLayer.perform(BuildStepCompatibilityLayer.java:79)
09:17:48 at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
09:17:48 at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:741)
09:17:48 at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:690)
09:17:48 at hudson.model.Build$BuildExecution.post2(Build.java:186)
09:17:48 at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:635)
09:17:48 at hudson.model.Run.execute(Run.java:1840)
09:17:48 at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
09:17:48 at hudson.model.ResourceController.execute(ResourceController.java:97)
09:17:48 at hudson.model.Executor.run(Executor.java:429)
09:17:48 Caused by: org.xml.sax.SAXParseException; lineNumber: 47595; columnNumber: 42; The value of attribute "name" associated with an element type "method" must not contain the '<' character.
09:17:48 at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
09:17:48 at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:177)
09:17:48 at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:400)
09:17:48 at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:327)
09:17:48 at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1472)
09:17:48 at com.sun.org.apache.xerces.internal.impl.XMLScanner.scanAttributeValue(XMLScanner.java:944)
09:17:48 at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanAttribute(XMLDocumentFragmentScannerImpl.java:1548)
09:17:48 at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1315)
09:17:48 at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2784)
09:17:48 at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)
09:17:48 at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)
09:17:48 at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:842)
09:17:48 at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:771)
09:17:48 at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
09:17:48 at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
09:17:48 at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:643)
09:17:48 at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(SAXParserImpl.java:327)
09:17:48 at javax.xml.parsers.SAXParser.parse(SAXParser.java:195)
09:17:48 at hudson.plugins.cobertura.CoberturaCoverageParser.parse(CoberturaCoverageParser.java:76)
09:17:48 ... 12 more
09:17:48 ERROR: Step ‘Publish Cobertura Coverage Report’ failed: [Cobertura] Unable to parse .../builds/3622/coverage.xml