syntax_data: {"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"err.is_lint(lint.name_lower(),"}]}
source_snippet:     err.is_lint(lint.name_lower(), /* has_future_breakage */ false);
context_before:     let future_incompatible = lint.future_incompatible.as_ref().unwrap();
context_after:     err.warn(lint.desc);