syntax_data: {"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"mir_enable_passes:"}]}
source_snippet:     mir_enable_passes: Vec<(String, bool)> = (Vec::new(), parse_list_with_polarity, [TRACKED],
context_before:         (default: no)"),
context_after:         "use like `-Zmir-enable-passes=+DestinationPropagation,-InstSimplify`. Forces the \