title: Cert not due for renewal, but simulating renewal for dry run
body: <p>I'm using certbot-auto generate certificate https for my domain name. I use command like this </p>
  
  <pre><code>sudo ./certbot-auto
  </code></pre>
  
  <p>it's ok, but when i renew certificate use command</p>
  
  <pre><code>sudo ./certbot-auto renew --dry-run
  </code></pre>
  
  <p>it can't renew certificate and show error message like below:</p>
  
  <pre><code>/root/.local/share/letsencrypt/lib/python2.6/site-packages/cryptography/__init__.py:26: DeprecationWarning: Python 2.6 is no longer supported by the Python core team, please upgrade your Python. A future version of cryptography will drop support for Python 2.6
    DeprecationWarning
  Saving debug log to /var/log/letsencrypt/letsencrypt.log
  
  -------------------------------------------------------------------------------
  Processing /etc/letsencrypt/renewal/example.asia.conf
  -------------------------------------------------------------------------------
  Cert not due for renewal, but simulating renewal for dry run
  Starting new HTTPS connection (1): acme-staging.api.letsencrypt.org
  Renewing an existing certificate
  Performing the following challenges:
  tls-sni-01 challenge for example.asia
  tls-sni-01 challenge for www.example.asia
  Waiting for verification...
  Cleaning up challenges
  Generating key (2048 bits): /etc/letsencrypt/keys/0020_key-certbot.pem
  Creating CSR: /etc/letsencrypt/csr/0020_csr-certbot.pem
  ** DRY RUN: simulating 'certbot renew' close to cert expiry
  **          (The test certificates below have not been saved.)
  
  Congratulations, all renewals succeeded. The following certs have been renewed:
    /etc/letsencrypt/live/example.asia/fullchain.pem (success)
  ** DRY RUN: simulating 'certbot renew' close to cert expiry
  **          (The test certificates above have not been saved.)
  </code></pre>
  
  <p>Please help me</p>