Full command output:
`Bootstrapping dependencies for RedHat-based OSes…
yum is /usr/bin/yum
Loaded plugins: fastestmirror, presto, priorities
Setting up Install Process
Loading mirror speeds from cached hostfile
updates: centos.weezel.co.uk
1565 packages excluded due to repository priority protections
Package python-2.6.6-64.el6.x86_64 already installed and latest version
Package python-devel-2.6.6-64.el6.x86_64 already installed and latest version
Package python-virtualenv-1.10.1-1.el6.noarch already installed and latest version
Nothing to do
Loaded plugins: fastestmirror, presto, priorities
Setting up Install Process
Loading mirror speeds from cached hostfile
updates: centos.weezel.co.uk
1565 packages excluded due to repository priority protections
Package gcc-4.4.7-16.el6.x86_64 already installed and latest version
Package dialog-1.1-9.20080819.1.el6.x86_64 already installed and latest version
Package augeas-libs-1.0.0-10.el6.x86_64 already installed and latest version
Package openssl-devel-1.0.1e-42.el6_7.2.x86_64 already installed and latest version
Package libffi-devel-3.0.5-3.2.el6.x86_64 already installed and latest version
Package redhat-rpm-config-9.0.3-44.el6.centos.noarch already installed and latest version
Package ca-certificates-2015.2.4-65.0.1.el6_6.noarch already installed and latest version
Nothing to do
Loaded plugins: fastestmirror, presto, priorities
Setting up Install Process
Loading mirror speeds from cached hostfile
updates: centos.weezel.co.uk
1565 packages excluded due to repository priority protections
Nothing to do
WARNING: Python 2.6 support is very experimental at present…
if you would like to work on improving it, please ensure you have backups
and then run this script again with the --debug flag!
`
Let’s Encrypt will attempt to open a HTTPS connection to your domain (uguardian.eu) to verify ownership. Make sure you don’t have any firewall rules or something similar that might block access to port 443 from the public internet.
Additionally, opening http://uguardian.eu/ results in a HTTP 400 error for me (which might or might not be related).