syntax_data: {"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":".with_note(\"using"}]}
source_snippet:             .with_note("using `become` on a builtin operator is not useful")
context_before:             .struct_span_err(value.span, "`become` does not support operators")
context_after:             .with_span_suggestion(