1 error: format argument must be a string literal
2 --> $DIR/bad_hello.rs:2:14
6 help: you might be missing a string literal to format with
8 LL | println!("{}", 3 + 4);
11 error: format argument must be a string literal
12 --> $DIR/bad_hello.rs:4:14
16 help: you might be missing a string literal to format with
18 LL | println!("{} {}", 3, 4);
21 error: aborting due to 2 previous errors