1 error[E0308]: mismatched types
2 --> $DIR/issue-84128.rs:13:13
5 | --- ^^ expected integer, found `()`
7 | arguments to this struct are incorrect
9 note: tuple struct defined here
10 --> $DIR/issue-84128.rs:5:8
12 LL | struct Foo<T>(T);
15 error: aborting due to previous error
17 For more information about this error, try `rustc --explain E0308`.