XWIKI-11745: Fail the build when unit test output content to stdout or stderr

* Exclude a file since it makes jacoco fail

xwiki-platform-core/xwiki-platform-office/xwiki-platform-office-importer/pom.xml

@@ -161,6 +161,18 @@
           </excludes>
         </configuration>
       </plugin>
+      <!-- Don't run Jacoco on com/steadystate/css/parser/SACParserCSS21TokenManager since it generates an error,
+           see http://stackoverflow.com/questions/14559117/how-do-i-disable-jacoco-agent-after-jacocoreport
+           TODO: remove when https://sourceforge.net/p/cssparser/bugs/53/ is fixed -->
+      <plugin>
+        <groupId>org.jacoco</groupId>
+        <artifactId>jacoco-maven-plugin</artifactId>
+        <configuration>
+          <excludes>
+            <exclude>**com.steadystate.css.parser.SACParserCSS21TokenManager</exclude>
+          </excludes>
+        </configuration>
+      </plugin>
     </plugins>
   </build>
 </project>