syntax_data: {"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"lint.covered_by_catchall"}]}
source_snippet:             lint.covered_by_catchall = Some(pat.span);
context_before:             let pat = covering_pat.data();
context_after:             find_fallback_pattern_typo(cx, hir_id, pat, &mut lint);