Suppress notifications for malformed dirreq-v3-ips lines

We've had a longstanding issue for months now where dirauths are accepting a malformed extrainfo descriptor... https://trac.torproject.org/projects/tor/ticket/16858 No point in continuing to spam myself. Unfortunately this will mask other legitimate issues until it's solved but meh - out of my hands.

Suppress notifications for malformed dirreq-v3-ips lines
96014b1a · Damian Johnson · e9047744 · 96014b1a · 96014b1a
Commit 96014b1a authored Jun 3, 2016 by Damian Johnson
--- a/descriptor_checker.py
+++ b/descriptor_checker.py
@@ -53,6 +53,8 @@ def main():
    if not query.error:
      count = len(list(query))
      log.debug("  %i descriptors retrieved from %s in %0.2fs" % (count, query.download_url, query.runtime))
+    elif "'dirreq-v3-ips' line had non-ascii content" in str(query.error):
+      log.debug("Suppressing error due to malformed dirreq-v3-ips line: https://trac.torproject.org/projects/tor/ticket/16858")
    else:
      log.warn("Unable to retrieve the %s: %s" % (descriptor_type, query.error))
      send_email(EMAIL_SUBJECT, descriptor_type, query)

--- a/fallback_directories.py
+++ b/fallback_directories.py
@@ -61,7 +61,7 @@ def main():
      issues.append('%s => Downloading the consensus took %0.1f seconds' % (relay.fingerprint, download_time))

  issue_percent = 100.0 * len(issues) / len(fallback_directories)
-  log.info('%i ssues found (%i%%)' % (len(issues), issue_percent))
+  log.info('%i issues found (%i%%)' % (len(issues), issue_percent))

  if issue_percent >= NOTIFICATION_THRESHOLD:
    log.info('Sending notification')