Revert "remove printing in replace_all_validate"

theano/gof/toolbox.py

@@ -208,7 +208,13 @@ class Validator(Feature):
             uf = cf.f_back
             uf_info = inspect.getframeinfo(uf)
 
-            # Print if verbose, then raise
+            # If the caller is replace_all_validate, just raise the
+            # exception. replace_all_validate will print out the
+            # verbose output.
+            # Or it has to be done here before raise.
+            if uf_info.function == 'replace_all_validate':
+                raise
+            else:
                 verbose = uf.f_locals.get('verbose', False)
                 if verbose:
                     r = uf.f_locals.get('r', "")
@@ -287,6 +293,8 @@ class ReplaceValidate(History, Validator):
             fgraph.validate()
         except Exception as e:
             fgraph.revert(chk)
+            if verbose:
+                print("validate failed on node %s.\n Reason: %s, %s" % (r, reason, e))
             raise
         if verbose:
             print(reason, r, new_r)