Installation on Centos 7 (this time its net-telnet)

[Atroskelis]

[root@localhost ~]# gem install oxidized
Fetching: asetus-0.3.0.gem (100%)
Successfully installed asetus-0.3.0
Fetching: net-ssh-4.1.0.gem (100%)
Successfully installed net-ssh-4.1.0
Fetching: rugged-0.27.2.gem (100%)
Building native extensions.  This could take a while...
Successfully installed rugged-0.27.2
Fetching: slop-3.6.0.gem (100%)
Successfully installed slop-3.6.0
Fetching: net-telnet-0.2.0.gem (100%)
ERROR:  Error installing oxidized:
        net-telnet requires Ruby version >= 2.3.0.
[root@localhost ~]#

[root@localhost ~]# gem install net-telnet -v 0.1.0
Fetching: net-telnet-0.1.0.gem (100%)
Successfully installed net-telnet-0.1.0
Parsing documentation for net-telnet-0.1.0
Installing ri documentation for net-telnet-0.1.0
1 gem installed
[root@localhost ~]# gem install oxidized           
Fetching: oxidized-0.24.0.gem (100%)
Successfully installed oxidized-0.24.0
Parsing documentation for oxidized-0.24.0
Installing ri documentation for oxidized-0.24.0
1 gem installed
[root@localhost ~]# ruby -v
ruby 2.0.0p648 (2015-12-16) [x86_64-linux]
[root@localhost ~]#  

[wk]

@Atroskelis thank you for the report.

This dependency on Ruby 2.3 is unintentional, and the result an optimistic dependency on net-telnet, which has recently (2018-07-25) seen a new release that requires Ruby 2.3.0. Resolved in #1475.