It looks like Sublime Text 3 uses OSX-default version of Ruby in build mode. I would like to change the version, since I'm using a newer one. I found some answers for privious version of sublime:
How to edit a native build system in Sublime Text 2?
Setting and changing build systems in Sublime Text 2
Ruby, Sublime Text 2 and RVM help please!
All of them are dealing with Ruby.sublime-build file (given that I have RVM installed), but I can't this file in Sublime Text 3. May be I should change /Users/Art/Library/Application Support/Sublime Text 3/Packages/User/Ruby.sublime-settings? But any manipulations with it didn't give me a result.
Any help would be really appreciated!