syntax_data: {"ast_node_type":"other","tokens":[{"end":26,"kind":"keyword","start":0,"text":"else"}]}
source_snippet:                     else {
context_before:                     let hir::ExprKind::Match(scrutinee, arms, _match_source) = block_body_expr.kind
context_after:                         dcx.emit_fatal(LoopMatchBadRhs { span: block_body_expr.span })