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-rw-r--r--morphlib/plugins/branch_and_merge_plugin.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/morphlib/plugins/branch_and_merge_plugin.py b/morphlib/plugins/branch_and_merge_plugin.py
index a258cd70..d816fb90 100644
--- a/morphlib/plugins/branch_and_merge_plugin.py
+++ b/morphlib/plugins/branch_and_merge_plugin.py
@@ -636,7 +636,8 @@ class BranchAndMergePlugin(cliapp.Plugin):
system_metadatum = systems[0]
metadata_cache_id_lookup = dict((md['cache-key'], md)
- for md in metadata)
+ for md in metadata
+ if 'cache-key' in md)
return system_metadatum, metadata_cache_id_lookup