error: casting i32 to i64 may become silently lossy if types change
--> $DIR/types.rs:9:23
|
9 | let c_i64 : i64 = c as i64;
| ^^^^^^^^ help: try: `i64::from(c)`
= note: `-D cast-lossless` implied by `-D warnings`
error: aborting due to previous error