1error: expected one of `!`, `(`, `)`, `+`, `,`, `::`, or `<`, found `y`
2  --> $DIR/issue-76597.rs:7:38
3   |
4LL | ...                   x: u8
5   |                            -
6   |                            |
7   |                            expected one of 7 possible tokens
8   |                            help: missing `,`
9LL | ...                   y: u8,
10   |                       ^ unexpected token
11
12error: aborting due to previous error
13
14