Don't write progress to stderr during testsuite run, as autopkgtest assumes that indicates failure.

debian/changelog

@@ -1,3 +1,10 @@
+dulwich (0.9.5-2) UNRELEASED; urgency=medium
+
+  * Don't write progress to stderr during testsuite run, as autopkgtest
+    assumes that indicates failure.
+
+ -- Jelmer Vernooij <jelmer@debian.org>  Tue, 25 Feb 2014 02:02:42 +0000
+
 dulwich (0.9.5-1) unstable; urgency=medium
 
   * Add upstream PGP signing key.

debian/tests/testsuite

@@ -1,3 +1,3 @@
 #!/bin/sh
-
-python -m unittest dulwich.tests.test_suite
+set -e
+python -m unittest dulwich.tests.test_suite 2>/dev/null