reduce vu update frequency, report more sql errors, fix bug with startup show time

src/artifacts.rs

@@ -144,6 +144,7 @@ pub struct BandcampQueryArgs {
 }
 
 #[derive(Debug)]
+#[allow(unused)]
 pub enum MixxxError {
     Sql(sqlite::Error)
 }
@@ -166,10 +167,11 @@ impl MixxxDB {
         let mut statement = connection.prepare(query)?;
         statement.bind((1, playlist_name.as_str()))?;
         statement.next()?;
-        let latest_id = statement.read::<i64, _>("id").unwrap();
+        let latest_id = statement.read::<i64, _>("id")?;
 
         let query = "SELECT title, artist, album, comment, url, bpm FROM library LEFT JOIN PlaylistTracks ON PlaylistTracks.track_id = library.id WHERE PlaylistTracks.playlist_id = ? ORDER BY position";
-        for track in connection.prepare(query).unwrap().into_iter().bind((1, latest_id)).unwrap().map(|row| row.unwrap()) {
+        for track in connection.prepare(query)?.into_iter().bind((1, latest_id))? {
+            let track = track?;
             let title = track.try_read::<&str, _>("title").unwrap_or("Untitled Track");
             let artist = track.try_read::<&str, _>("artist").unwrap_or("Unknown Artist");
             let album = track.try_read::<&str, _>("album").unwrap_or("Unknown Album");