syntax_data: {"ast_node_type":"other","tokens":[{"end":57,"kind":"keyword","start":0,"text":"mutable_noalias:"}]}
source_snippet:     mutable_noalias: bool = (true, parse_bool, [TRACKED],
context_before:         "the size at which the `large_assignments` lint starts to be emitted"),
context_after:         "emit noalias metadata for mutable references (default: yes)"),