1 error[E0369]: cannot add `&str` to `&str`
2 --> $DIR/issue-47380.rs:3:35
4 LL | println!("🦀🦀🦀🦀🦀"); let _a = b + ", World!";
7 | | `+` cannot be used to concatenate two `&str` strings
10 = note: string concatenation requires an owned `String` on the left
11 help: create an owned `String` from a string reference
13 LL | println!("🦀🦀🦀🦀🦀"); let _a = b.to_owned() + ", World!";
16 error: aborting due to previous error
18 For more information about this error, try `rustc --explain E0369`.