WIP: element.py: Fix error in _cached_buildtree() without artifact

1 files changed, 6 insertions, 0 deletions

diff --git a/buildstream/element.py b/buildstream/element.py
index b01347866..543403353 100644
--- a/buildstream/element.py
+++ b/buildstream/element.py
@@ -2146,6 +2146,9 @@ class Element(Plugin):
     #             not its contents.
     #
     def _cached_buildtree(self):
+        if not self._cached():
+            return False
+
         return self.__artifact.cached_buildtree()
 
     # _buildtree_exists()
@@ -2157,6 +2160,9 @@ class Element(Plugin):
     #     (bool): True if artifact was created with buildtree
     #
     def _buildtree_exists(self):
+        if not self._cached():
+            return False
+
         return self.__artifact.buildtree_exists()
 
     # _cached_logs()