syntax_data: {"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // FIXME: this should not be checking for `Drop` impls,
context_before:         //     pub const LOG: Log = Log { msg: "" };
context_after:         // but whether it or any field has a Drop impl (`needs_drop`)