main: Fix silly logic bug in the exponential backoff code

src/main.rs

@@ -38,7 +38,7 @@ use crate::{
     state::FeedReaderStateDb
 };
 
-use std::{ sync::Arc, cmp::max };
+use std::{ sync::Arc, cmp::min, cmp::max };
 use tracing::{ info, debug, error };
 use chrono::DateTime;
 
@@ -81,7 +81,7 @@ async fn main() -> anyhow::Result<()> {
                 };
 
                 let feed = if feed.is_none() {
-                    backoff = max(backoff * 2, 6 * 3600);
+                    backoff = min(backoff * 2, 6 * 3600);
                     error!("Backing off for {} seconds", backoff);
                     sleep(Duration::from_secs(backoff)).await;
                     continue;