syntax_data: {"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"Diag::new(dcx,"}]}
source_snippet:         Diag::new(dcx, level, self.explain).with_span(self.span).with_code(E0658)
context_before:     fn into_diag(self, dcx: DiagCtxtHandle<'a>, level: Level) -> Diag<'a, G> {
context_after:     }