syntax_data: {"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"use_ctors_section:"}]}
source_snippet:     use_ctors_section: Option<bool> = (None, parse_opt_bool, [TRACKED],
context_before:         "adds unstable command line options to rustc interface (default: no)"),
context_after:         "use legacy .ctors section for initializers rather than .init_array"),