First recollected: TokenStream [
    Ident {
        ident: "pub",
        span: $DIR/nonterminal-recollect-attr.rs:20:11: 20:14 (#0),
    },
    Ident {
        ident: "struct",
        span: $DIR/nonterminal-recollect-attr.rs:14:12: 14:18 (#4),
    },
    Ident {
        ident: "Foo",
        span: $DIR/nonterminal-recollect-attr.rs:14:19: 14:22 (#4),
    },
    Group {
        delimiter: Brace,
        stream: TokenStream [
            Ident {
                ident: "field",
                span: $DIR/nonterminal-recollect-attr.rs:15:13: 15:18 (#4),
            },
            Punct {
                ch: ':',
                spacing: Alone,
                span: $DIR/nonterminal-recollect-attr.rs:15:18: 15:19 (#4),
            },
            Ident {
                ident: "u8",
                span: $DIR/nonterminal-recollect-attr.rs:15:20: 15:22 (#4),
            },
        ],
        span: $DIR/nonterminal-recollect-attr.rs:14:23: 16:10 (#4),
    },
]
Second recollected: TokenStream [
    Ident {
        ident: "pub",
        span: $DIR/nonterminal-recollect-attr.rs:20:11: 20:14 (#0),
    },
    Ident {
        ident: "struct",
        span: $DIR/nonterminal-recollect-attr.rs:14:12: 14:18 (#4),
    },
    Ident {
        ident: "Foo",
        span: $DIR/nonterminal-recollect-attr.rs:14:19: 14:22 (#4),
    },
    Group {
        delimiter: Brace,
        stream: TokenStream [
            Ident {
                ident: "field",
                span: $DIR/nonterminal-recollect-attr.rs:15:13: 15:18 (#4),
            },
            Punct {
                ch: ':',
                spacing: Alone,
                span: $DIR/nonterminal-recollect-attr.rs:15:18: 15:19 (#4),
            },
            Ident {
                ident: "u8",
                span: $DIR/nonterminal-recollect-attr.rs:15:20: 15:22 (#4),
            },
        ],
        span: $DIR/nonterminal-recollect-attr.rs:14:23: 16:10 (#4),
    },
]