try to fix build

tensorpack/callbacks/monitor.py

@@ -318,7 +318,7 @@ class ScalarPrinter(TrainingMonitor):
         def compile_regex(rs):
             if rs is None:
                 return None
-            rs = set([r if isinstance(r, re.RegexObject) else re.compile(r) for r in rs])
+            rs = set([re.compile(r) for r in rs])
             return rs
 
         self._whitelist = compile_regex(whitelist)

tests/test_infogan.py

 from case_script import TestPythonScript
 
+from tensorpack.tfutils.common import get_tf_version_number
+
 
 class InfoGANTest(TestPythonScript):
 
@@ -8,4 +10,6 @@ class InfoGANTest(TestPythonScript):
         return '../examples/GAN/InfoGAN-mnist.py'
 
     def test(self):
+        if get_tf_version_number() < 1.4:
+            return True     # requires leaky_relu
         self.assertSurvive(self.script, args=None)