fetchmail: print unhandled exceptions, but don't crash

refs #1295

optional/fetchmail/fetchmail.py

@@ -8,6 +8,7 @@ import subprocess
 import re
 import requests
 import sys
+import traceback
 
 
 FETCHMAIL = """
@@ -45,6 +46,7 @@ def fetchmail(fetchmailrc):
 
 
 def run(debug):
+    try:
         fetches = requests.get("http://admin/internal/fetch").json()
         smtphost, smtpport = extract_host_port(os.environ.get("HOST_SMTP", "smtp"), None)
         if smtpport is None:
@@ -86,6 +88,8 @@ def run(debug):
                 requests.post("http://admin/internal/fetch/{}".format(fetch["id"]),
                     json=error_message.split("\n")[0]
                 )
+    except Exception:
+        traceback.print_exc()
 
 
 if __name__ == "__main__":