syntax_data: {"ast_node_type":"other","tokens":[{"end":59,"kind":"keyword","start":0,"text":"builder::closure_saved_names_of_captured_variables;"}]}
source_snippet:         builder::closure_saved_names_of_captured_variables;
context_before:     providers.closure_saved_names_of_captured_variables =
context_after:     providers.check_unsafety = check_unsafety::check_unsafety;