error: prefix `world` is unknown
  --> $DIR/lex-bad-str-literal-as-char-4.rs:4:25
   |
LL |         println!('hello world');
   |                         ^^^^^ unknown prefix
   |
   = note: prefixed identifiers and literals are reserved since Rust 2021
help: if you meant to write a string literal, use double quotes
   |
LL |         println!("hello world");
   |                  ~           ~

error[E0762]: unterminated character literal
  --> $DIR/lex-bad-str-literal-as-char-4.rs:4:30
   |
LL |         println!('hello world');
   |                              ^^^
   |
help: if you meant to write a string literal, use double quotes
   |
LL |         println!("hello world");
   |                  ~           ~

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0762`.