diff --git a/compiler/debug.py b/compiler/debug.py
index 7001373e..1bf46db0 100644
--- a/compiler/debug.py
+++ b/compiler/debug.py
@@ -13,19 +13,19 @@ def check(check,str):
     (frame, filename, line_number, function_name, lines,
      index) = inspect.getouterframes(inspect.currentframe())[1]
     if not check:
-        print("ERROR: file {0}: line {1}: {2}".format(os.path.basename(filename),line_number,str))
+        sys.stderr.write("ERROR: file {0}: line {1}: {2}\n".format(os.path.basename(filename),line_number,str))
         assert 0
 
 def error(str,return_value=0):
     (frame, filename, line_number, function_name, lines,
      index) = inspect.getouterframes(inspect.currentframe())[1]
-    print("ERROR: file {0}: line {1}: {2}".format(os.path.basename(filename),line_number,str))
+    sys.stderr.write("ERROR: file {0}: line {1}: {2}\n".format(os.path.basename(filename),line_number,str))
     assert return_value==0
 
 def warning(str):
     (frame, filename, line_number, function_name, lines,
      index) = inspect.getouterframes(inspect.currentframe())[1]
-    print("WARNING: file {0}: line {1}: {2}".format(os.path.basename(filename),line_number,str))
+    sys.stderr.write("WARNING: file {0}: line {1}: {2}\n".format(os.path.basename(filename),line_number,str))
 
 
 def info(lev, str):
diff --git a/compiler/tests/regress.py b/compiler/tests/regress.py
index 73ec0d7f..93989248 100755
--- a/compiler/tests/regress.py
+++ b/compiler/tests/regress.py
@@ -28,5 +28,6 @@ suite = unittest.TestSuite()
 load = unittest.defaultTestLoader.loadTestsFromModule
 suite.addTests(map(load, modules))
 
-ret = not unittest.TextTestRunner(verbosity=2).run(suite).wasSuccessful()
-sys.exit(ret)
+test_runner = unittest.TextTestRunner(verbosity=2,stream=sys.stderr)
+test_result = test_runner.run(suite)
+sys.exit(not test_result.wasSuccessful())