syntax_data: {"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"providers.check_unsafety"}]}
source_snippet:     providers.check_unsafety = check_unsafety::check_unsafety;
context_before:         builder::closure_saved_names_of_captured_variables;
context_after:     providers.check_tail_calls = check_tail_calls::check_tail_calls;