It currently only refers to the collection name:
...:ValidateCollections] "ns" : "test83_fsmdb0.create_capped_collection1_2", <snip> ...:ValidateCollections] "errors" : [ ...:ValidateCollections] "fast count (1) does not match number of records (2) for collection 'test83_fsmdb0.create_capped_collection1_2'" ...:ValidateCollections] ],