Fixes #29: Processing errors without cause

Author: adangel

ReleaseNotes.md

@@ -17,6 +17,7 @@ Eclipse Update Site:
 ### Fixed Issues
 
 *   [#20](https://github.com/pmd/pmd-eclipse-plugin/issues/20): category.xml maybe broken
+*   [#29](https://github.com/pmd/pmd-eclipse-plugin/issues/29): Processing errors without cause
 *   [#32](https://github.com/pmd/pmd-eclipse-plugin/issues/32): Upgrade PMD to 6.2.0
 *   [#43](https://github.com/pmd/pmd-eclipse-plugin/issues/43): Update unit tests to use new ruleset categories
 

net.sourceforge.pmd.eclipse.plugin/src/main/java/net/sourceforge/pmd/eclipse/runtime/cmd/BaseVisitor.java

@@ -374,10 +374,12 @@ public String defaultFileExtension() {
 
                 if (collectingReport.hasErrors()) {
                     StringBuilder message = new StringBuilder("There were processing errors!\n");
-                    Iterator<ProcessingError> errors = context.getReport().errors();
+                    Iterator<ProcessingError> errors = collectingReport.errors();
                     while (errors.hasNext()) {
                         ProcessingError error = errors.next();
-                        message.append(error.getFile()).append(": ").append(error.getMsg()).append("\n");
+                        message.append(error.getFile()).append(": ").append(error.getMsg()).append(' ')
+                        .append(error.getDetail())
+                        .append("\n");
                     }
                     PMDPlugin.getDefault().logWarn(message.toString());
                     throw new PMDException(message.toString());