syntax_data: {"ast_node_type":"variable","tokens":[{"end":45,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let mut hasher = StableHasher::new();
context_before:     let hash = tcx.with_stable_hashing_context(|mut hcx| {
context_after:         full_mangling_name().hash_stable(&mut hcx, &mut hasher);