syntax_data: {"ast_node_type":"variable","tokens":[{"end":71,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:     let DefPathData::AnonAssocTy(name) = disambiguated_data.data else {
context_before:     let disambiguated_data = tcx.def_key(trait_assoc_def_id).disambiguated_data;
context_after:         bug!("expected anon associated type")