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Searching for binary rubies, this might take some time.
No binary rubies available for: centos/7/x86_64/ruby-2.5.1.
Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.
Checking requirements for centos.
Requirements installation successful.
Installing Ruby from source to: /usr/local/rvm/rubies/ruby-2.5.1, this may take a while depending on your cpu(s)...
ruby-2.5.1 - #downloading ruby-2.5.1, this may take a while depending on your connection...
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 13.3M  100 13.3M    0     0   866k      0  0:00:15  0:00:15 --:--:--  823k
ruby-2.5.1 - #extracting ruby-2.5.1 to /usr/local/rvm/src/ruby-2.5.1.....
ruby-2.5.1 - #configuring..................................................................
ruby-2.5.1 - #post-configuration..
ruby-2.5.1 - #compiling....................................................................
ruby-2.5.1 - #installing.............................
ruby-2.5.1 - #making binaries executable..
ruby-2.5.1 - #downloading rubygems-2.7.7
ruby-2.5.1 - #extracting rubygems-2.7.7.....................................................
ruby-2.5.1 - #removing old rubygems........
ruby-2.5.1 - #installing rubygems-2.7.7................................
ruby-2.5.1 - #gemset created /usr/local/rvm/gems/ruby-2.5.1@global
ruby-2.5.1 - #importing gemset /usr/local/rvm/gemsets/global.gems...................................................
ruby-2.5.1 - #generating global wrappers.......
ruby-2.5.1 - #gemset created /usr/local/rvm/gems/ruby-2.5.1
ruby-2.5.1 - #importing gemsetfile /usr/local/rvm/gemsets/default.gems evaluated to empty gem list
ruby-2.5.1 - #generating default wrappers.......
ruby-2.5.1 - #adjusting #shebangs for (gem irb erb ri rdoc testrb rake).
Install of ruby-2.5.1 - #complete
Ruby was built without documentation, to build it run: rvm docs generate-ri