mvn clean cobertura:cobertura fails

[jamo]

mvn clean cobertura:cobertura fails both locally and in travis

[INFO] --- maven-surefire-plugin:2.18.1:test (default-test) @ core ---
[INFO]
[INFO] --- maven-checkstyle-plugin:2.16:check (test) @ core ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 6.437 s
[INFO] Finished at: 2016-04-05T05:38:31+03:00
[INFO] Final Memory: 39M/135M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:2.16:check (test) on project core: Unable to parse configuration of mojo org.apache.maven.plugins:maven-checkstyle-plugin:2.16:check: Basic element 'excludes' must not contain child elements -> [Help 1]
[ERROR]

[Salmela]

Did you ever figure out why this error occurred. I couldn't figure out solution for it either.
I got over it by just removing the excludes. I am not sure why it works but it does.
testmycode/tmc-cli#394

The stacktrace that I got from it was the following. The root of the problem seems to be conflicting parsing of the excludes element. Checkstyle wants the excludes to contain plain text list of the files and rest of the build system wants the excludes element to contain set of exclude elements.

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:2.17:check (test) on project tmc-cli: Unable to parse configuration of mojo org.apache.maven.plugins:maven-checkstyle-plugin:2.17:check: Basic element 'excludes' must not contain child elements -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:2.17:check (test) on project tmc-cli: Unable to parse configuration of mojo org.apache.maven.plugins:maven-checkstyle-plugin:2.17:check: Basic element 'excludes' must not contain child elements
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
	at org.apache.maven.lifecycle.internal.MojoExecutor.executeForkedExecutions(MojoExecutor.java:352)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:197)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
	at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
	at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
	at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
	at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
	at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
	at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.PluginConfigurationException: Unable to parse configuration of mojo org.apache.maven.plugins:maven-checkstyle-plugin:2.17:check: Basic element 'excludes' must not contain child elements
	at org.apache.maven.plugin.internal.DefaultMavenPluginManager.populatePluginFields(DefaultMavenPluginManager.java:662)
	at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getConfiguredMojo(DefaultMavenPluginManager.java:594)
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:121)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
	... 24 more
Caused by: org.codehaus.plexus.component.configurator.ComponentConfigurationException: Basic element 'excludes' must not contain child elements
	at org.codehaus.plexus.component.configurator.converters.basic.AbstractBasicConverter.fromConfiguration(AbstractBasicConverter.java:34)
	at org.eclipse.sisu.plexus.CompositeBeanHelper.convertProperty(CompositeBeanHelper.java:273)
	at org.eclipse.sisu.plexus.CompositeBeanHelper.setProperty(CompositeBeanHelper.java:210)
	at org.codehaus.plexus.component.configurator.converters.composite.ObjectWithFieldsConverter.processConfiguration(ObjectWithFieldsConverter.java:101)
	at org.codehaus.plexus.component.configurator.BasicComponentConfigurator.configureComponent(BasicComponentConfigurator.java:34)
	at org.apache.maven.plugin.internal.DefaultMavenPluginManager.populatePluginFields(DefaultMavenPluginManager.java:632)
	... 27 more