tlsappointmentbot: Don't send warnings on first failure

src/tlsappointmentbot.py

@@ -37,6 +37,8 @@ class TLSAppointmentBot:
         while not self.matrix_bot.initial_sync_done:
             await asyncio.sleep(1)
 
+        tries = 0
+
         while True:
             try:
                 logger.info("checking for appointment slots")
@@ -57,10 +59,18 @@ class TLSAppointmentBot:
 
             except Exception:
                 logging.error(traceback.format_exc().strip())
+                if tries > 3:
                     await self.matrix_bot.send_warning()
+                    break
 
+                tries += 1
+                continue
+
+            tries = 0
             await asyncio.sleep(2 * 60)
 
+        self.quit()
+
     def _is_logged_in(self) -> bool:
         self.driver.get(f"{self.config.tls_instance}/BJS/index.php")
         button = wait.WebDriverWait(self.driver, 10).until(
@@ -87,7 +97,7 @@ class TLSAppointmentBot:
 
         # Make sure we're on the page, and that we can see the
         # appointment table
-        wait.WebDriverWait(self.driver, 10).until(
+        wait.WebDriverWait(self.driver, 20).until(
             ec.visibility_of_element_located((By.XPATH, "//tr[@class='amend']"))
         )