1 error[E0054]: cannot cast as `bool`
2 --> $DIR/cast-rfc0401-2.rs:6:13
4 LL | let _ = 3 as bool;
5 | ^^^^^^^^^ help: compare with zero instead: `3 != 0`
7 error: aborting due to previous error
9 For more information about this error, try `rustc --explain E0054`.