'circular reference' error in even empty jruby files, but jruby -c shows Syntax OK

## Information

**VIM version**

VIM - Vi IMproved 8.1 (2018 May 18, compiled Jun 5 2020 21:30:37)
macOS version

OSX 10.15.7

## What went wrong

I use both MRI and JRuby. MRI works fine; however, when I open any jruby file, I immediately see this error, even in an empty file:
```warning: loading in progress, circular require considered harmful - /Users/fe....2.13.0/lib/ruby/stdlib/rubygems.rb require at org/jruby/RubyKernel.java:974```

If I `jruby -c` on the same file I get Syntax OK.

I did check open + closed issues for 'harmful' and 'circular require' ... nothing. I've posted to the JRuby mail list as well.

However, since jruby -c returns Syntax OK, it seems to be some sort of obscure interaction between vim, jruby, and ale.

When I use a Jruby version *older* than 9.1.0.0, I *don't* see the error. That may have something to do with a change that was made in 9.1:

https://github.com/jruby/jruby/pull/3370
https://www.jruby.org/2016/05/03/jruby-9-1-0-0.html

However again I'm confused because jruby -c doesn't output this circular require error. And the error happens even on blank file

One wrinkle, the error appears on the *second* line of every file I open. Unless, if that file is only one line, then it appears on the *first* line. If I add a second line, the error glyph immediately hops to the second line.

## Reproducing the bug

In my specific environment:
* Jruby 9.2.13.0
* vim as above
* open any .rb file with clean syntax
--> see the circular reference error
* move an RVM gemset which uses MRI / CRuby
* open any .rb file
--> no error

### :ALEInfo

Current Filetype: ruby
Available Linters: ['brakeman', 'debride', 'rails_best_practices', 'reek', 'rubocop', 'ruby', 'solargraph', 'sorbet', 'standardrb']
Linter Aliases:
'sorbet' -> ['srb']
Enabled Linters: ['ruby']
Ignored Linters: []
Suggested Fixers:
'remove_trailing_lines' - Remove all blank lines at the end of a file.
'rubocop' - Fix ruby files with rubocop --auto-correct.
'rufo' - Fix ruby files with rufo
'sorbet' - Fix ruby files with srb tc --autocorrect.
'standardrb' - Fix ruby files with standardrb --fix
'trim_whitespace' - Remove all trailing whitespace characters at the end of every line.
Linter Variables:

let g:ale_ruby_rails_best_practices_executable = 'rails_best_practices'
let g:ale_ruby_rails_best_practices_options = ''
let g:ale_ruby_ruby_executable = 'ruby'
Global Variables:

let g:ale_cache_executable_check_failures = v:null
let g:ale_change_sign_column_color = 0
let g:ale_command_wrapper = ''
let g:ale_completion_delay = v:null
let g:ale_completion_enabled = 0
let g:ale_completion_max_suggestions = v:null
let g:ale_disable_lsp = 0
let g:ale_echo_cursor = 1
let g:ale_echo_msg_error_str = 'Error'
let g:ale_echo_msg_format = '%code: %%s'
let g:ale_echo_msg_info_str = 'Info'
let g:ale_echo_msg_warning_str = 'Warning'
let g:ale_enabled = 1
let g:ale_fix_on_save = 0
let g:ale_fixers = {}
let g:ale_history_enabled = 1
let g:ale_history_log_output = 1
let g:ale_keep_list_window_open = 0
let g:ale_lint_delay = 200
let g:ale_lint_on_enter = 1
let g:ale_lint_on_filetype_changed = 1
let g:ale_lint_on_insert_leave = 1
let g:ale_lint_on_save = 1
let g:ale_lint_on_text_changed = 'normal'
let g:ale_linter_aliases = {}
let g:ale_linters = {'ruby': ['ruby'], 'javascript': ['jshint']}
let g:ale_linters_explicit = 0
let g:ale_linters_ignore = {}
let g:ale_list_vertical = 0
let g:ale_list_window_size = 10
let g:ale_loclist_msg_format = '%code: %%s'
let g:ale_lsp_root = {}
let g:ale_max_buffer_history_size = 20
let g:ale_max_signs = -1
let g:ale_maximum_file_size = v:null
let g:ale_open_list = 0
let g:ale_pattern_options = v:null
let g:ale_pattern_options_enabled = v:null
let g:ale_set_balloons = 0
let g:ale_set_highlights = 1
let g:ale_set_loclist = 1
let g:ale_set_quickfix = 0
let g:ale_set_signs = 1
let g:ale_sign_column_always = 0
let g:ale_sign_error = '✘'
let g:ale_sign_info = '⚠'
let g:ale_sign_offset = 1000000
let g:ale_sign_style_error = '✘'
let g:ale_sign_style_warning = '⚠'
let g:ale_sign_warning = '⚠'
let g:ale_sign_highlight_linenrs = 0
let g:ale_statusline_format = v:null
let g:ale_type_map = {}
let g:ale_use_global_executables = v:null
let g:ale_virtualtext_cursor = 0
let g:ale_warn_about_trailing_blank_lines = 1
let g:ale_warn_about_trailing_whitespace = 1
Command History:

(executable check - success) ruby
(finished - exit code 255) ['/bin/bash', '-c', '''ruby'' -w -c -T1 ''/var/folders/08/psnnwkq92ngc_nk1549bs3wr0000gp/T/vcorv4c/0/foo.rb''']

<<>>
/Users/felipe/.rvm/rubies/jruby-9.2.13.0/lib/ruby/stdlib/rubygems/text.rb:2: warning: loading in progress, circular require considered harmful - /Users/felipe/.rvm/rubies/jruby-9.2.13.0/lib/ruby/stdlib/rubygems.rb require at org/jruby/RubyKernel.java:974
at /Users/felipe/.rvm/rubies/jruby-9.2.13.0/lib/ruby/stdlib/rubygems/text.rb:2
require at org/jruby/RubyKernel.java:974
at /Users/felipe/.rvm/rubies/jruby-9.2.13.0/lib/ruby/stdlib/rubygems/user_interaction.rb:10
require at org/jruby/RubyKernel.java:974
at /Users/felipe/.rvm/rubies/jruby-9.2.13.0/lib/ruby/stdlib/rubygems/config_file.rb:8
at /Users/felipe/.rvm/rubies/jruby-9.2.13.0/lib/ruby/stdlib/rubygems/defaults/jruby_native.rb:1
require at org/jruby/RubyKernel.java:974
at /Users/felipe/.rvm/rubies/jruby-9.2.13.0/lib/ruby/stdlib/rubygems/defaults/jruby.rb:122
require at org/jruby/RubyKernel.java:974
at /Users/felipe/.rvm/rubies/jruby-9.2.13.0/lib/ruby/stdlib/rubygems/defaults/operating_system.rb:4
require at org/jruby/RubyKernel.java:974
at /Users/felipe/.rvm/rubies/jruby-9.2.13.0/lib/ruby/stdlib/rubygems.rb:1372
require at org/jruby/RubyKernel.java:974
at uri:classloader:/jruby/kernel/gem_prelude.rb:3
load at org/jruby/RubyKernel.java:1009
at file:/Users/felipe/.rvm/rubies/jruby-9.2.13.0/lib/jruby.jar!/jruby/preludes.rb:4

SyntaxError in /var/folders/08/psnnwkq92ngc_nk1549bs3wr0000gp/T/vcorv4c/0/foo.rb:8: syntax error, unexpected end-of-file

<<>>