syntax_data: {"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"_"}]}
source_snippet:                             _ => dcx.emit_fatal(LoopMatchMissingAssignment { span: body.span }),
context_before:                             hir::StmtKind::Expr(expr) | hir::StmtKind::Semi(expr) => expr,
context_after:                         },