Description

When installing MRI 2.6.1 on macOS 10.14.4 Beta, all goes well until #installing rubygems-3.0.2. At that point I see this:

Error running 'env GEM_HOME=/ruby-2.6.1@global GEM_PATH= /Users/jdashton/.rvm/rubies/ruby-2.6.1/bin/ruby -d /Users/jdashton/.rvm/src/rubygems-3.0.2/setup.rb --no-document',
please read /Users/jdashton/.rvm/log/1549554328_ruby-2.6.1/rubygems.install.log

Steps to reproduce

1. Install rvm master with rvm get master.

2. Install Ruby 2.6.1 with rvm install 2.6.

Expected behavior

Ruby 2.6.1 should be cleanly installed.

Actual behavior

Installation fails with an error about running setup.rb for rubygems-3.0.2.

• rubygems.install.log
• config.log
• make.log

Environment info

ruby-2.5.3:

system:
uname: "Darwin d11442.nadadventist.org 18.5.0 Darwin Kernel Version 18.5.0: Thu Jan 31 01:17:54 PST 2019; root:xnu-4903.250.319~62/RELEASE_X86_64 x86_64"
name: "OSX"
version: "10.14"
architecture: "x86_64"
bash: "/usr/local/bin/bash => GNU bash, version 5.0.2(1)-release (x86_64-apple-darwin18.2.0)"
zsh: "/usr/local/bin/zsh => zsh 5.7.1 (x86_64-apple-darwin18.2.0)"
remote_path: "osx/10.14/x86_64"
xcode: "10.1"

rvm:
version: "1.29.7-next (master)"
updated: "58 minutes 18 seconds ago"
path: "/Users/jdashton/.rvm"
autolibs: "[4] Allow RVM to use package manager if found, install missing dependencies, install package manager (only OS X)."

ruby:
interpreter: "ruby"
version: "2.5.3p105"
date: "2018-10-18"
platform: "x86_64-darwin18"
patchlevel: "2018-10-18 revision 65156"
full_version: "ruby 2.5.3p105 (2018-10-18 revision 65156) [x86_64-darwin18]"

homes:
gem: "/Users/jdashton/.rvm/gems/ruby-2.5.3"
ruby: "/Users/jdashton/.rvm/rubies/ruby-2.5.3"

binaries:
ruby: "/Users/jdashton/.rvm/rubies/ruby-2.5.3/bin/ruby"
irb: "/Users/jdashton/.rvm/rubies/ruby-2.5.3/bin/irb"
gem: "/Users/jdashton/.rvm/rubies/ruby-2.5.3/bin/gem"
rake: "/Users/jdashton/.rvm/gems/ruby-2.5.3@global/bin/rake"

environment:
PATH: "/Users/jdashton/.rvm/gems/ruby-2.5.3/bin:/Users/jdashton/.rvm/gems/ruby-2.5.3@global/bin:/Users/jdashton/.rvm/rubies/ruby-2.5.3/bin:/Users/jdashton/.rvm/bin:/usr/local/sbin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Applications/VMware Fusion.app/Contents/Public:/usr/local/MacGPG2/bin:/Users/jdashton/.rvm/bin:/Users/jdashton/bin"
GEM_HOME: "/Users/jdashton/.rvm/gems/ruby-2.5.3"
GEM_PATH: "/Users/jdashton/.rvm/gems/ruby-2.5.3:/Users/jdashton/.rvm/gems/ruby-2.5.3@global"
MY_RUBY_HOME: "/Users/jdashton/.rvm/rubies/ruby-2.5.3"
IRBRC: "/Users/jdashton/.rvm/rubies/ruby-2.5.3/.irbrc"
RUBYOPT: ""
gemset: ""