syntax_data: {"ast_node_type":"other","tokens":[{"end":10,"kind":"keyword","start":0,"text":"};"}]}
source_snippet:         };
context_before:             bug!("expected `dyn` type in `confirm_trait_upcasting_unsize_candidate`")
context_after:         let ty::Dynamic(b_data, b_region, ty::Dyn) = *b_ty.kind() else {