error[E0605]: non-primitive cast: `i32` as `&(dyn std::any::Any + 'static)` --> $DIR/issue-22289.rs:2:5 | LL | 0 as &std::any::Any; //~ ERROR non-primitive cast | ^^^^^^^^^^^^^^^^^^^ | = note: an `as` expression can only be used to convert between primitive types. Consider using the `From` trait error: aborting due to previous error For more information about this error, try `rustc --explain E0605`.