syntax_data: {"ast_node_type":"function","tokens":[{"end":102,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:                 fn hash(&self, hasher: &mut StableHasher, _: ErrorOutputType, _for_crate_hash: bool) {
context_before:             impl DepTrackingHash for $t {
context_after:                     Hash::hash(self, hasher);