Fixups from review (#144)

Author: adangel

src/it/MPMD-379-JDK21/invoker.properties

@@ -15,8 +15,6 @@
 # specific language governing permissions and limitations
 # under the License.
 
-invoker.java.version = 1.8+
-
 # available toolchains under linux:
 # https://github.com/apache/infrastructure-p6/blob/production/modules/build_nodes/files/toolchains.xml
 

src/main/java/org/apache/maven/plugins/pmd/exec/CpdExecutor.java

@@ -181,11 +181,11 @@ private CpdResult run() throws MavenReportException {
                         writeFormattedReport(report);
                     }
                 } catch (MavenReportException e) {
-                    LOG.error(e.getMessage(), e);
+                    LOG.error("Error while writing CPD report", e);
                 }
             });
         } catch (IOException e) {
-            LOG.error("Error while executing CPD: {}", e.getMessage(), e);
+            LOG.error("Error while executing CPD", e);
         }
         LOG.debug("CPD finished.");