syntax_data: {"ast_node_type":"other","tokens":[{"end":102,"kind":"keyword","start":0,"text":"\"allow"}]}
source_snippet:         "allow deducing higher-ranked outlives assumptions from coroutines when proving auto traits"),
context_before:     higher_ranked_assumptions: bool = (false, parse_bool, [TRACKED],
context_after:     hint_mostly_unused: bool = (false, parse_bool, [TRACKED],