syntax_data: {"ast_node_type":"other","tokens":[{"end":45,"kind":"keyword","start":0,"text":"debug!(?provisional_cache_entry);"}]}
source_snippet:             debug!(?provisional_cache_entry);
context_before:                 ProvisionalCacheEntry { encountered_overflow, heads, path_from_head, result };
context_after:             entry.push(provisional_cache_entry);