`mix test` crash when upgrading postgrex from 0.8 -> 0.9.1

error-report.txt

=ERROR REPORT==== 10-Aug-2015::21:33:01 ===
** Generic server <0.876.0> terminating 
** Last message in was {tcp,#Port<0.44223>,
                            <<82,0,0,0,8,0,0,0,0,83,0,0,0,22,97,112,112,108,
                              105,99,97,116,105,111,110,95,110,97,109,101,0,0,
                              83,0,0,0,25,99,108,105,101,110,116,95,101,110,
                              99,111,100,105,110,103,0,85,84,70,56,0,83,0,0,0,
                              23,68,97,116,101,83,116,121,108,101,0,73,83,79,
                              44,32,77,68,89,0,83,0,0,0,25,105,110,116,101,
                              103,101,114,95,100,97,116,101,116,105,109,101,
                              115,0,111,110,0,83,0,0,0,27,73,110,116,101,114,
                              118,97,108,83,116,121,108,101,0,112,111,115,116,
                              103,114,101,115,0,83,0,0,0,20,105,115,95,115,
                              117,112,101,114,117,115,101,114,0,111,110,0,83,
                              0,0,0,25,115,101,114,118,101,114,95,101,110,99,
                              111,100,105,110,103,0,85,84,70,56,0,83,0,0,0,25,
                              115,101,114,118,101,114,95,118,101,114,115,105,
                              111,110,0,57,46,52,46,52,0,83,0,0,0,35,115,101,
                              115,115,105,111,110,95,97,117,116,104,111,114,
                              105,122,97,116,105,111,110,0,112,111,115,116,
                              103,114,101,115,0,83,0,0,0,35,115,116,97,110,
                              100,97,114,100,95,99,111,110,102,111,114,109,
                              105,110,103,95,115,116,114,105,110,103,115,0,
                              111,110,0,83,0,0,0,23,84,105,109,101,90,111,110,
                              101,0,108,111,99,97,108,116,105,109,101,0,75,0,
                              0,0,12,0,0,80,7,63,112,156,83,90,0,0,0,5,73>>}
** When Server state == #{backend_key => nil,
                          bootstrap => false,
                          extensions => [{'Elixir.Postgrex.Extensions.Binary',nil},
                           {'Elixir.Postgrex.Extensions.Text',nil}],
                          listener_channels => #{'__struct__' => 'Elixir.HashDict',
                            root => {[],[],[],[],[],[],[],[]},
                            size => 0},
                          listeners => #{'__struct__' => 'Elixir.HashDict',
                            root => {[],[],[],[],[],[],[],[]},
                            size => 0},
                          opts => [{database,<<"postgres">>},
                           {sync_connect,true},
                           {hostname,<<"localhost">>},
                           {username,<<"postgres">>},
                           {password,<<>>}],
                          parameters => #{},
                          portal => nil,
                          queue => {[#{command => {connect,[{database,<<"postgres">>},
                                        {sync_connect,true},
                                        {hostname,<<"localhost">>},
                                        {username,<<"postgres">>},
                                        {password,<<>>}]},
                              from => {<0.48.0>,#Ref<0.0.2.6149>},
                              reply => no_reply}],
                           []},
                          rows => [],
                          sock => {gen_tcp,#Port<0.44223>},
                          state => auth,
                          statement => nil,
                          tail => <<>>,
                          types => types_removed,
                          types_key => {"localhost",5432,<<"postgres">>,[]}}
** Reason for termination == 
** {{noproc,{'Elixir.GenServer',call,
                                ['Elixir.Postgrex.TypeServer',
                                 {fetch,{"localhost",5432,<<"postgres">>,[]}},
                                 60000]}},
    [{'Elixir.GenServer',call,3,[{file,"lib/gen_server.ex"},{line,365}]},
     {'Elixir.Postgrex.Protocol',bootstrap,1,
                                 [{file,"lib/postgrex/protocol.ex"},
                                  {line,34}]},
     {'Elixir.Postgrex.Connection',new_data,2,
                                   [{file,"lib/postgrex/connection.ex"},
                                    {line,417}]},
     {'Elixir.Postgrex.Connection',handle_info,2,
                                   [{file,"lib/postgrex/connection.ex"},
                                    {line,292}]},
     {gen_server,try_dispatch,4,[{file,"gen_server.erl"},{line,615}]},
     {gen_server,handle_msg,5,[{file,"gen_server.erl"},{line,681}]},
     {proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,239}]}]}
** (EXIT from #PID<0.48.0>) exited in: GenServer.call(Postgrex.TypeServer, {:fetch, {'localhost', 5432, "postgres", []}}, 60000)
    ** (EXIT) no process