meck cover enoent

qrilka@qdesktop ~/ws/erl/meck_test $ rebar skip_deps=true eunit
==> Entering directory `/home/qrilka/ws/erl/meck_test/apps/app'
==> app (eunit)
module 'b'
*** context setup failed ***
**in function meck:check_expect_result/1 (src/meck.erl, line 663)
**error:{undefined_function,{a,b,0}}


=======================================================
  Failed: 0.  Skipped: 0.  Passed: 0.
One or more tests were cancelled.
ERROR: Cover analyze failed for a: {not_cover_compiled,a} []

=ERROR REPORT==== 17-Mar-2014::11:18:05 ===
** Generic server a_meck terminating 
** Last message in was {'EXIT',<0.59.0>,normal}
** When Server state == {state,a,
                               [{c,0}],
                               {dict,0,16,16,8,80,48,
                                     {[],[],[],[],[],[],[],[],[],[],[],[],[],
                                      [],[],[]},
                                     {{[],[],[],[],[],[],[],[],[],[],[],[],[],
                                       [],[],[]}}},
                               true,[],
                               {{"/home/qrilka/ws/erl/meck_test/apps/app/.eunit/a.beam",
                                 "a.coverdata",
                                 [{outdir,".eunit"},
                                  debug_info,
                                  {d,'TEST'},
                                  {i,"include"}]},
                                <<70,79,82,49,0,0,2,212,66,69,65,77,65,116,
                                  111,109,0,0,0,60,0,0,0,6,15,97,95,109,101,
                                  99,107,95,111,114,105,103,105,110,97,108,1,
                                  99,2,111,107,11,109,111,100,117,108,101,95,
                                  105,110,102,111,6,101,114,108,97,110,103,15,
                                  103,101,116,95,109,111,100,117,108,101,95,
                                  105,110,102,111,67,111,100,101,0,0,0,74,0,0,
                                  0,16,0,0,0,0,0,0,0,153,0,0,0,7,0,0,0,3,1,16,
                                  153,16,2,18,34,0,1,32,64,50,3,19,1,48,153,0,
                                  2,18,66,0,1,64,64,18,3,153,0,78,16,0,1,80,
                                  153,0,2,18,66,16,1,96,64,3,19,64,18,3,153,0,
                                  78,32,16,3,0,0,83,116,114,84,0,0,0,0,73,109,
                                  112,84,0,0,0,28,0,0,0,2,0,0,0,5,0,0,0,6,0,0,
                                  0,1,0,0,0,5,0,0,0,6,0,0,0,2,69,120,112,84,0,
                                  0,0,40,0,0,0,3,0,0,0,4,0,0,0,1,0,0,0,6,0,0,
                                  0,4,0,0,0,0,0,0,0,4,0,0,0,2,0,0,0,0,0,0,0,2,
                                  76,111,99,84,0,0,0,4,0,0,0,0,65,116,116,114,
                                  0,0,0,40,131,108,0,0,0,1,104,2,100,0,3,118,
                                  115,110,108,0,0,0,1,110,16,0,99,26,216,55,
                                  28,37,31,82,121,212,58,2,183,175,205,62,106,
                                  106,67,73,110,102,0,0,0,192,131,108,0,0,0,4,
                                  104,2,100,0,7,111,112,116,105,111,110,115,
                                  108,0,0,0,4,104,2,100,0,6,111,117,116,100,
                                  105,114,107,0,6,46,101,117,110,105,116,100,
                                  0,10,100,101,98,117,103,95,105,110,102,111,
                                  104,2,100,0,1,100,100,0,4,84,69,83,84,104,2,
                                  100,0,1,105,107,0,7,105,110,99,108,117,100,
                                  101,106,104,2,100,0,7,118,101,114,115,105,
                                  111,110,107,0,5,52,46,57,46,51,104,2,100,0,
                                  4,116,105,109,101,104,6,98,0,0,7,222,97,3,
                                  97,17,97,7,97,18,97,5,104,2,100,0,6,115,111,
                                  117,114,99,101,107,0,45,47,104,111,109,101,
                                  47,113,114,105,108,107,97,47,119,115,47,101,
                                  114,108,47,109,101,99,107,95,116,101,115,
                                  116,47,97,112,112,115,47,97,112,112,47,46,
                                  101,117,110,105,116,106,65,98,115,116,0,0,0,
                                  161,131,80,0,0,0,221,120,156,101,142,73,18,
                                  194,32,20,68,127,70,19,55,222,68,203,19,81,
                                  29,248,17,8,132,20,1,245,248,146,114,167,
                                  219,238,215,131,174,21,93,34,94,2,211,158,
                                  34,100,18,207,187,35,162,78,183,138,70,164,
                                  20,205,148,19,163,82,212,206,198,177,174,23,
                                  26,247,40,111,184,114,116,168,254,177,222,7,
                                  149,29,151,90,8,207,114,17,33,154,135,89,
                                  225,126,208,50,124,146,193,111,230,96,207,
                                  252,222,66,76,2,206,233,78,209,48,231,85,38,
                                  19,86,148,76,37,65,199,165,234,112,122,233,
                                  144,119,70,107,237,87,107,202,49,164,224,81,
                                  204,58,44,214,234,82,220,112,152,49,216,15,
                                  69,176,65,148,0,0,0,76,105,110,101,0,0,0,33,
                                  0,0,0,0,0,0,0,0,0,0,0,5,0,0,0,1,0,0,0,1,18,
                                  65,0,9,115,114,99,47,97,46,101,114,108,0,0,0>>},
                               false,undefined,[]}
** Reason for termination == 
** {{badmatch,{error,enoent}},
    [{meck_cover,read_cover_file,1,[{file,"src/meck_cover.erl"},{line,93}]},
     {meck_cover,rename_module,2,[{file,"src/meck_cover.erl"},{line,36}]},
     {meck_proc,export_original_cover,2,
                [{file,"src/meck_proc.erl"},{line,540}]},
     {meck_proc,terminate,2,[{file,"src/meck_proc.erl"},{line,304}]},
     {gen_server,terminate,6,[{file,"gen_server.erl"},{line,719}]},
     {proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,239}]}]}
Cover analysis: /home/qrilka/ws/erl/meck_test/apps/app/.eunit/index.html
ERROR: One or more eunit tests failed.