test_lightning: Update to new error message format.

tests/test_lightningd.py

@@ -3251,11 +3251,11 @@ class LightningDTests(BaseLightningDTests):
 
         # Can't pay while its offline.
         self.assertRaises(ValueError, l1.rpc.sendpay, to_json(route), rhash)
-        l1.daemon.wait_for_log('Failing: First peer not ready: WIRE_TEMPORARY_CHANNEL_FAILURE')
+        l1.daemon.wait_for_log('failed: WIRE_TEMPORARY_CHANNEL_FAILURE \\(First peer not ready\\)')
 
         # Should fail due to temporary channel fail
         self.assertRaises(ValueError, l1.rpc.sendpay, to_json(route), rhash)
-        l1.daemon.wait_for_log('Failing: First peer not ready: WIRE_TEMPORARY_CHANNEL_FAILURE')
+        l1.daemon.wait_for_log('failed: WIRE_TEMPORARY_CHANNEL_FAILURE \\(First peer not ready\\)')
         assert not l1.daemon.is_in_log('Payment is still in progress')
 
         # After it sees block, someone should close channel.