Addressed some warnings, moved a few debug!() to trace!()

src/gtfs/refresher.rs

@@ -1,4 +1,4 @@
-use log::{debug, error, info};
+use log::{debug, info};
 use time_format::format_common_utc;
 use std::{fs::{self}, time::{Duration, SystemTime, UNIX_EPOCH}};
 use crate::gtfs::structs::{Error, Preferences};
@@ -57,5 +57,5 @@ pub(crate) fn refresh(prefs: &Preferences) -> Result<(), Error> {
     }
 
     let errmsg = format!("GET on {} returned result code {}", prefs.gtfs_url, response.status());
-    return Err(Error { message: errmsg });
+    return Err(Error { _message: errmsg });
 }    

src/gtfs/structs.rs

@@ -7,24 +7,24 @@ use zip::result::ZipError;
 
 #[derive(Debug)]
 pub struct Error {
-    pub(crate) message: String,
+    pub(crate) _message: String,
 }
 
 impl From<std::io::Error> for Error {
     fn from(value: std::io::Error) -> Self {
-        return Error { message: value.to_string() }
+        return Error { _message: value.to_string() }
     }
 }
 
 impl From<reqwest::Error> for Error {
     fn from(value: reqwest::Error) -> Self {
-        return Error { message: value.to_string() }
+        return Error { _message: value.to_string() }
     }
 }
 
 impl From<ZipError> for Error {
     fn from(value: ZipError) -> Self {
-        return Error { message: value.to_string() }
+        return Error { _message: value.to_string() }
     }
 }
 
@@ -60,7 +60,7 @@ impl Preferences {
         let file_name_part = self.gtfs_url.split("/").last();
         if file_name_part.is_none() {
             error!("The config for gtfs-url is not a valid URL: {}", self.gtfs_url);
-            return Err(Error {message: String::from("Failed to refresh GTFS data")});
+            return Err(Error {_message: String::from("Failed to refresh GTFS data")});
         } 
         return Ok(String::from(file_name_part.unwrap()));
     }

src/renderer/mod.rs

@@ -1,7 +1,7 @@
 pub mod structs;
 use std::{cmp::min};
 use chrono::{Datelike, Local, Timelike};
-use log::{debug, error, warn};
+use log::{error, trace, warn};
 use sdl3::{Sdl, pixels::Color, rect::Rect};
 use structs::{Prefs, DisplayData};
 
@@ -12,7 +12,7 @@ const COLOR_LCD_AMBER   : Color = Color::RGB(0xf4, 0xcb, 0x60);
 const COLOR_LCD_GREEN   : Color = Color::RGB(0xb3, 0xff, 0x00);
 const COLOR_LCD_RED     : Color = Color::RGB(0xff, 0x3a, 0x4a);
 const COLOR_BACKGROUND  : Color = Color::RGB(0x0,  0x0,  0x0 );
-const COLOR_TEXT_BG     : Color = Color::RGBA(0x0, 0x0, 0x0, 0x0);
+const _COLOR_TEXT_BG     : Color = Color::RGBA(0x0, 0x0, 0x0, 0x0);
 const TEXT_SIZE: f32 = 160.0;  // Size of the font in pixels
 
 // Offsets of each part within a line
@@ -34,7 +34,7 @@ impl Screen<'_> {
     }
 
     fn format_due_for(&self, due_in_mins: i32, departure_time: u32) -> String {
-        debug!("Due in mins: {:02}", due_in_mins);
+        trace!("Due in mins: {:02}", due_in_mins);
         if due_in_mins <= 1 {
             return String::from("due");
         }