Index: clang-tools-extra/trunk/clang-tidy/tool/run-clang-tidy.py
===================================================================
--- clang-tools-extra/trunk/clang-tidy/tool/run-clang-tidy.py
+++ clang-tools-extra/trunk/clang-tidy/tool/run-clang-tidy.py
@@ -167,9 +167,9 @@
     if proc.returncode != 0:
       failed_files.append(name)
     with lock:
-      sys.stdout.write(' '.join(invocation) + '\n' + output + '\n')
-      if err > 0:
-        sys.stderr.write(err + '\n')
+      sys.stdout.write(' '.join(invocation) + '\n' + output.decode('utf-8') + '\n')
+      if len(err) > 0:
+        sys.stderr.write(err.decode('utf-8') + '\n')
     queue.task_done()