probalby found most of the import related stuff, now the real refactor begins

rust/src/hal/esp.rs

@@ -6,7 +6,7 @@ use anyhow::{anyhow, bail, Context};
 use chrono::{DateTime, Utc};
 use serde::Serialize;
 
-use alloc::{vec::Vec, string::String};
+use alloc::{vec::Vec, string::{String, ToString}};
 
 #[link_section = ".rtc.data"]
 static mut LAST_WATERING_TIMESTAMP: [i64; PLANT_COUNT] = [0; PLANT_COUNT];