1 error[E0282]: type annotations needed
2 --> $DIR/cannot-infer-const-args.rs:6:5
5 | ^^^ cannot infer the value of the const parameter `X` declared on the function `foo`
7 help: consider specifying the generic argument
12 error: aborting due to previous error
14 For more information about this error, try `rustc --explain E0282`.