flush ?

single_file_tests/input.rs

@@ -3,6 +3,7 @@ fn main() -> Result<(), Box<dyn Error>> {
     let mut input = String::new();
 
     println!("Please input: ");
+    // io::stdout().flush().ok();
     io::stdin().read_line(&mut input)?;
 
     println!("You typed: {}", input.trim());