/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/www.kinryokai.net.conf
-------------------------------------------------------------------------------
Cert not due for renewal, but simulating renewal for dry run
Renewing an existing certificate
Performing the following challenges:
tls-sni-01 challenge for www.kinryokai.net
Waiting for verification...
Cleaning up challenges
Generating key (2048 bits): /etc/letsencrypt/keys/0001_key-certbot.pem
Creating CSR: /etc/letsencrypt/csr/0001_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/www.kinryokai.net/fullchain.pem (success)
** DRY RUN: simulating 'certbot renew' close to cert expiry **
         (The test certificates above have not been saved.)
後略

MAILTO=""
15 6 * * * /root/certbot-auto renew --quiet
15 7 * * * /root/certbot-auto renew --quiet