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