started cleanup and moving from std to no_std

rust/src/hal/water.rs

@@ -109,11 +109,11 @@ impl<'a> TankSensor<'a> {
             let temp = self.single_temperature_c();
             match &temp {
                 Ok(res) => {
-                    println!("Water temp is {}", res);
+                    log::info!("Water temp is {}", res);
                     break temp;
                 }
                 Err(err) => {
-                    println!("Could not get water temp {} attempt {}", err, attempt)
+                    log::info!("Could not get water temp {} attempt {}", err, attempt)
                 }
             }
             if attempt == 5 {