syntax_data: {"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"scope:"}]}
source_snippet:             scope: region::Scope { local_id: arm.hir_id.local_id, data: region::ScopeData::Node },
context_before:             lint_level: LintLevel::Explicit(arm.hir_id),
context_after:             span: arm.span,