--- /dev/null
+error: casting a character literal to `u8` truncates
+ --> $DIR/char_lit_as_u8.rs:4:13
+ |
+LL | let _ = '❤' as u8; // no suggestion, since a byte literal won't work.
+ | ^^^^^^^^^
+ |
+ = note: `-D clippy::char-lit-as-u8` implied by `-D warnings`
+ = note: `char` is four bytes wide, but `u8` is a single byte
+
+error: aborting due to previous error
+