syntax_data: {"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"std::mem::transmute::<ty::SymbolName<'tcx>,"}]}
source_snippet:             std::mem::transmute::<ty::SymbolName<'tcx>, ty::SymbolName<'_>>(ty::SymbolName::new(
context_before:         unsafe {
context_after:                 tcx, "<error>",