syntax_data: {"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"higher_ranked_assumptions:"}]}
source_snippet:     higher_ranked_assumptions: bool = (false, parse_bool, [TRACKED],
context_before:         "explicitly enable the `cfg(target_thread_local)` directive"),
context_after:         "allow deducing higher-ranked outlives assumptions from coroutines when proving auto traits"),