log when feedback.read fails

src/gui.rs

@@ -357,12 +357,17 @@ impl Feedback {
 
    fn read(&mut self) -> Option<String> {
       return match &self.cfg.url {
-         Some(url) => match reqwest::blocking::get(url) {
-            Ok(resp) => match resp.text() {
-               Ok(text) => Some(text),
-               _ => None,
-            },
-            _ => None,
+         Some(url) => {
+            match reqwest::blocking::get(url) {
+               Ok(resp) => match resp.text() {
+                  Ok(text) => Some(text),
+                  _ => None,
+               },
+               Err(err) => {
+                  eprintln!("feedback.read: cannot fetch: {}", err);
+                  None
+               },
+            }
          },
          _ => None,
       };