TST: another small fix in integration tests

integrationtests/basic_example/test_basic.py

@@ -108,7 +108,7 @@ def crawler_extended(ident):
 
 
 def test_ambigious_lookup(clear_database, usemodel, crawler, ident):
-    ins, ups = crawler.synchronize()
+    ins, ups = crawler[0].synchronize(crawler[1])
 
     proj = db.execute_query("FIND Project WITH identifier='SpeedOfLight'", unique=True)
     with pytest.raises(RuntimeError, match=".*unambigiously.*"):