{"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"|"}]}
                    | (BorrowKind::Mutable, BorrowKind::Mutable) => {
                    | (BorrowKind::UniqueImmutable, BorrowKind::UniqueImmutable)
                        bug!("Expected unequal capture kinds");