--- a/tools/tryselect/task_config.py
+++ b/tools/tryselect/task_config.py
@@ -225,16 +225,21 @@ class Rebuild(TryConfig):
           'help': 'Rebuild all selected tasks the specified number of times.',
           }],
     ]
 
     def try_config(self, rebuild, **kwargs):
         if not rebuild:
             return
 
+        if kwargs.get('full') and rebuild > 3:
+            print('warning: limiting --rebuild to 3 when using --full. '
+                  'Use custom push actions to add more.')
+            rebuild = 3
+
         return {
             'rebuild': rebuild,
         }
 
 
 class Routes(TryConfig):
     arguments = [
         [