PRINT-BANG INPUT (DISPLAY): FirstStruct
PRINT-BANG INPUT (DEBUG): TokenStream [
    Group {
        delimiter: None,
        stream: TokenStream [
            Ident {
                ident: "FirstStruct",
                span: $DIR/auxiliary/nested-macro-rules.rs:15:14: 15:25 (#3),
            },
        ],
        span: $DIR/auxiliary/nested-macro-rules.rs:9:27: 9:32 (#3),
    },
]
PRINT-BANG INPUT (DISPLAY): SecondStruct
PRINT-BANG INPUT (DEBUG): TokenStream [
    Group {
        delimiter: None,
        stream: TokenStream [
            Ident {
                ident: "SecondStruct",
                span: $DIR/nested-macro-rules.rs:18:38: 18:50 (#9),
            },
        ],
        span: $DIR/auxiliary/nested-macro-rules.rs:9:27: 9:32 (#8),
    },
]