Add better logging.

src/webhook.rs

@@ -77,14 +77,17 @@ pub(crate) async fn hook(
                         message: None,
                     }),
                 ),
-                Err(_) => (
+                Err(e) => {
+                    tracing::error!("Failed to handle push event: {}", e);
+                    (
                         // StatusCode::INTERNAL_SERVER_ERROR,
                         StatusCode::OK,
                         Json(HookResponse {
                             ok: false,
                             message: Some("Failed to handle push event.".to_string()),
                         }),
-                ),
+                    )
+                }
             }
         }
         HookRequest::Unrecognized(payload) => (