[MCHECKSTYLE-351] Plugin execution fails on error when using google_checks

**[Martin Schneider](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=martinschneider)** opened **[MCHECKSTYLE-351](https://issues.apache.org/jira/browse/MCHECKSTYLE-351?redirect=false)** and commented

 
I'm using the version 3.0.0 with Checkstyle 6.18.

This is my initial configuration:

```

org.apache.maven.plugins
 maven-checkstyle-plugin
${maven.checkstyle.plugin.version}

  true
true

```

Running `mvn checkstyle:checkstyle` will fail the build since there are checkstyle errors. This is expected. 

`[ERROR] Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:3.0.0:check (default-cli) on project demo: Failed during checkstyle execution: There are 311 errors reported by Checkstyle 6.18 with sun_checks.xml ruleset. -> [Help 1]`

However, when I use `google_checks.xml the build succeeds without any error (checkstyle-report.xml` still shows the issues).

 

```

org.apache.maven.plugins
 maven-checkstyle-plugin
${maven.checkstyle.plugin.version}

google_checks.xml
  true
true

```

 

My expectation would be that the build fails when I use the `google_checks.xml` configuration.

https://stackoverflow.com/questions/50040980/checkstyle-maven-plugin-doesnt-fail-on-error-when-using-google-checks

---
No further details from [MCHECKSTYLE-351](https://issues.apache.org/jira/browse/MCHECKSTYLE-351?redirect=false)

Reproduce the issue with Maven Checkstyle Plugin 3.0.0 and Checkstyle 6.18 using the shown configuration, first with the default rules and then with google_checks.xml. Compare the build result with checkstyle-report.xml; done means violations using google_checks.xml cause the plugin execution to fail as expected.

Written by the indexing model from the issue text.