Elixir v1.1.0 crash report

gistfile1.txt

On OSX 10.9.5. elixir and erlang installed from brew. I see the following when running `iex`, `mix`, `elixir` etc.

=ERROR REPORT==== 28-Sep-2015::21:53:12 ===
** gen_event handler 'Elixir.Logger.ErrorHandler' crashed.
** Was installed in error_logger
** Last event was: {info_report,<0.38.0>,
                       {<0.40.0>,progress,
                        [{supervisor,{local,'Elixir.Logger.Supervisor'}},
                         {started,
                             [{pid,<0.45.0>},
                              {name,'Elixir.Logger.ErrorHandler'},
                              {mfargs,
                                  {'Elixir.Logger.Watcher',watcher,
                                      [error_logger,
                                       'Elixir.Logger.ErrorHandler',
                                       {true,false,500},
                                       link]}},
                              {restart_type,permanent},
                              {shutdown,5000},
                              {child_type,worker}]}]}}
** When handler state == #{dropped => 0,
                           threshold => 500,
                           otp => true,
                           sasl => false,
                           logger => <0.41.0>,
                           last_time => {1443,495192,465590},
                           last_length => 0}
** Reason == {function_clause,
                 [{'Elixir.Logger.ErrorHandler',check_threshold,
                      [#{dropped => 0,
                         threshold => 500,
                         otp => true,
                         sasl => false,
                         logger => <0.41.0>,
                         last_time => {1443,495192,465590},
                         last_length => 0}],
                      [{file,"lib/logger/error_handler.ex"},{line,81}]},
                  {'Elixir.Logger.ErrorHandler',handle_event,2,
                      [{file,"lib/logger/error_handler.ex"},{line,26}]},
                  {gen_event,server_update,4,
                      [{file,"gen_event.erl"},{line,525}]},
                  {gen_event,server_notify,4,
                      [{file,"gen_event.erl"},{line,507}]},
                  {gen_event,handle_msg,5,[{file,"gen_event.erl"},{line,248}]},
                  {proc_lib,init_p_do_apply,3,
                      [{file,"proc_lib.erl"},{line,237}]}]}
** (ArgumentError) argument error
    (elixir) lib/code.ex:363: Code.require_file/2