Update change to suppress reporting of Tornado exception error 1 to updated package (ref:hacks.txt).

lib/tornado/http1connection.py

@@ -726,7 +726,8 @@ class HTTP1ServerConnection(object):
                     # This exception was already logged.
                     conn.close()
                     return
-                except Exception:
+                except Exception as e:
+                    if 1 != e.errno:
                         gen_log.error("Uncaught exception", exc_info=True)
                     conn.close()
                     return

lib/tornado/iostream.py

@@ -648,6 +648,7 @@ class BaseIOStream(object):
         except UnsatisfiableReadError:
             raise
         except Exception as e:
+            if 1 != e.errno:
                 gen_log.warning("error on read: %s" % e)
             self.close(exc_info=True)
             return