syntax_data: {"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"relro_level:"}]}
source_snippet:     relro_level: Option<RelroLevel> = (None, parse_relro_level, [TRACKED],
context_before:         (`rustc --print relocation-models` for details)"),
context_after:         "choose which RELRO level to use"),