syntax_data: {"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"DepTrackingHash::hash(key,"}]}
source_snippet:                 DepTrackingHash::hash(key, hasher, error_format, for_crate_hash);
context_before:             for (key, val) in &self.0 {
context_after:                 if !for_crate_hash {