@Override
 public void finished(
     boolean aborted, int errors, int warnings, final CompileContext compileContext) {
   try {
     for (CompilerMessageCategory category : CompilerMessageCategory.values()) {
       for (CompilerMessage message : compileContext.getMessages(category)) {
         final String msg = message.getMessage();
         if (category != CompilerMessageCategory.INFORMATION
             || !msg.startsWith("Compilation completed successfully")) {
           myMessages.add(category + ": " + msg);
         }
       }
     }
     if (errors > 0) {
       fail("Compiler errors occurred! " + StringUtil.join(myMessages, "\n"));
     }
     assertFalse("Code did not compile!", aborted);
   } catch (Throwable t) {
     myError = t;
   } finally {
     mySemaphore.up();
   }
 }