1 error[E0061]: this function takes 2 arguments but 1 argument was supplied
2 --> $DIR/issue-18819.rs:16:5
7 | |expected reference, found struct `X`
8 | an argument of type `&str` is missing
10 = note: expected reference `&dyn Foo<Item = bool>`
12 note: function defined here
13 --> $DIR/issue-18819.rs:11:4
15 LL | fn print_x(_: &dyn Foo<Item=bool>, extra: &str) {
16 | ^^^^^^^ ---------------------- -----------
17 help: consider borrowing here
21 help: provide the argument
23 LL | print_x({&dyn Foo<Item = bool>}, {&str});
24 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
26 error: aborting due to previous error
28 For more information about this error, try `rustc --explain E0061`.