1 error[E0308]: mismatched types
2 --> $DIR/issue-37665.rs:20:17
4 LL | let x: () = 0; //~ ERROR: mismatched types
5 | ^ expected (), found integral variable
7 = note: expected type `()`
10 error: aborting due to previous error
12 For more information about this error, try `rustc --explain E0308`.