$ bin/rbx
load error: /home/clgc/.irbrc
TypeError:   Tried to use object of type Module (39) as type Class (13)
An exception has occurred:
    No method 'size' on an instance of Backtrace. (NoMethodError)

Backtrace:
     Kernel(Backtrace)#method_missing at kernel/delta/kernel.rb:55
                       IRB.run_config at /home/clgc/languages/rbx/lib/irb/init.rb:212
                            IRB.setup at /home/clgc/languages/rbx/lib/irb/init.rb:20
                            IRB.start at /home/clgc/languages/rbx/lib/irb.rb:54
                      main.__script__ at /home/clgc/languages/rbx/lib/bin/irb.rb:13
    CompiledMethod#activate_as_script at kernel/common/compiled_method.rb:263
             CompiledMethod#as_script at kernel/common/compiled_method.rb:256
                  Compile.single_load at kernel/common/compile.rb:247
                 Compile.unified_load at kernel/common/compile.rb:103
               Kernel(Object)#require at kernel/common/compile.rb:448
                    Object#__script__ at kernel/loader.rb:281