erl crash

gistfile1.txt

λ erl -pa ebin deps/*/ebin
{error_logger,{{2014,9,4},{14,53,53}},"~s~n",["Error in process <0.23.0> with exit value: {undef,[{group,start,[<0.23.0>,{}],[]},{user_drv,start_user,0,[{file,\"user_drv.erl\"},{line,154}]},{user_drv,server1,3,[{file,\"user_drv.erl\"},{line,114}]}]}\n"]}
{error_logger,{{2014,9,4},{14,54,3}},crash_report,[[{initial_call,{supervisor_bridge,user_sup,['Argument__1']}},{pid,<0.22.0>},{registered_name,[]},{error_info,{exit,nouser,[{gen_server,init_it,6,[{file,"gen_server.erl"},{line,322}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,239}]}]}},{ancestors,[kernel_sup,<0.10.0>]},{messages,[]},{links,[<0.11.0>]},{dictionary,[]},{trap_exit,true},{status,running},{heap_size,610},{stack_size,27},{reductions,346}],[]]}
{error_logger,{{2014,9,4},{14,54,3}},supervisor_report,[{supervisor,{local,kernel_sup}},{errorContext,start_error},{reason,nouser},{offender,[{pid,undefined},{name,user},{mfargs,{user_sup,start,[]}},{restart_type,temporary},{shutdown,2000},{child_type,supervisor}]}]}
{error_logger,{{2014,9,4},{14,54,3}},crash_report,[[{initial_call,{application_master,init,['Argument__1','Argument__2','Argument__3','Argument__4']}},{pid,<0.9.0>},{registered_name,[]},{error_info,{exit,{{shutdown,{failed_to_start_child,user,nouser}},{kernel,start,[normal,[]]}},[{application_master,init,4,[{file,"application_master.erl"},{line,133}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,239}]}]}},{ancestors,[<0.8.0>]},{messages,[{'EXIT',<0.10.0>,normal}]},{links,[<0.8.0>,<0.7.0>]},{dictionary,[]},{trap_exit,true},{status,running},{heap_size,376},{stack_size,27},{reductions,117}],[]]}
{error_logger,{{2014,9,4},{14,54,3}},std_info,[{application,kernel},{exited,{{shutdown,{failed_to_start_child,user,nouser}},{kernel,start,[normal,[]]}}},{type,permanent}]}
{"Kernel pid terminated",application_controller,"{application_start_failure,kernel,{{shutdown,{failed_to_start_child,user,nouser}},{kernel,start,[normal,[]]}}}"}

Crash dump was written to: erl_crash.dump
Kernel pid terminated (application_controller) ({application_start_failure,kernel,{{shutdown,{failed_to_start_child,user,nouser}},{kernel,start,[normal,[]]}}})

init_debug

λ erl -init_debug -pa ebin deps/restc/ebin  
{progress,preloaded}
{progress,kernel_load_completed}
{progress,modules_loaded}
{start,heart}
{start,error_logger}
{start,application_controller}
{progress,init_kernel_started}
{apply,{application,load,[{application,stdlib,[{description,"ERTS  CXC 138 10"},{vsn,"2.1"},{id,[]},{modules,[array,base64,beam_lib,binary,c,calendar,dets,dets_server,dets_sup,dets_utils,dets_v8,dets_v9,dict,digraph,digraph_utils,edlin,edlin_expand,epp,eval_bits,erl_bits,erl_compile,erl_eval,erl_expand_records,erl_internal,erl_lint,erl_parse,erl_posix_msg,erl_pp,erl_scan,erl_tar,error_logger_file_h,error_logger_tty_h,escript,ets,file_sorter,filelib,filename,gb_trees,gb_sets,gen,gen_event,gen_fsm,gen_server,io,io_lib,io_lib_format,io_lib_fread,io_lib_pretty,lib,lists,log_mf_h,maps,math,ms_transform,orddict,ordsets,otp_internal,pg,pool,proc_lib,proplists,qlc,qlc_pt,queue,random,re,sets,shell,shell_default,slave,sofs,string,supervisor,supervisor_bridge,sys,timer,unicode,win32reg,zip]},{registered,[timer_server,rsh_starter,take_over_monitor,pool_master,dets]},{applications,[kernel]},{included_applications,[]},{env,[]},{maxT,infinity},{maxP,infinity}]}]}}
{progress,applications_loaded}
{apply,{application,start_boot,[kernel,permanent]}}
{error_logger,{{2014,9,4},{15,39,35}},"~s~n",["Error in process <0.23.0> with exit value: {undef,[{group,start,[<0.23.0>,{}],[]},{user_drv,start_user,0,[{file,\"user_drv.erl\"},{line,154}]},{user_drv,server1,3,[{file,\"user_drv.erl\"},{line,114}]}]}\n"]}
{error_logger,{{2014,9,4},{15,39,45}},crash_report,[[{initial_call,{supervisor_bridge,user_sup,['Argument__1']}},{pid,<0.22.0>},{registered_name,[]},{error_info,{exit,nouser,[{gen_server,init_it,6,[{file,"gen_server.erl"},{line,322}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,239}]}]}},{ancestors,[kernel_sup,<0.10.0>]},{messages,[]},{links,[<0.11.0>]},{dictionary,[]},{trap_exit,true},{status,running},{heap_size,610},{stack_size,27},{reductions,336}],[]]}
{error_logger,{{2014,9,4},{15,39,45}},supervisor_report,[{supervisor,{local,kernel_sup}},{errorContext,start_error},{reason,nouser},{offender,[{pid,undefined},{name,user},{mfargs,{user_sup,start,[]}},{restart_type,temporary},{shutdown,2000},{child_type,supervisor}]}]}
{error_logger,{{2014,9,4},{15,39,45}},crash_report,[[{initial_call,{application_master,init,['Argument__1','Argument__2','Argument__3','Argument__4']}},{pid,<0.9.0>},{registered_name,[]},{error_info,{exit,{{shutdown,{failed_to_start_child,user,nouser}},{kernel,start,[normal,[]]}},[{application_master,init,4,[{file,"application_master.erl"},{line,133}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,239}]}]}},{ancestors,[<0.8.0>]},{messages,[{'EXIT',<0.10.0>,normal}]},{links,[<0.8.0>,<0.7.0>]},{dictionary,[]},{trap_exit,true},{status,running},{heap_size,376},{stack_size,27},{reductions,117}],[]]}
{apply,{application,start_boot,[stdlib,permanent]}}
{error_logger,{{2014,9,4},{15,39,45}},std_info,[{application,kernel},{exited,{{shutdown,{failed_to_start_child,user,nouser}},{kernel,start,[normal,[]]}}},{type,permanent}]}
{"Kernel pid terminated",application_controller,"{application_start_failure,kernel,{{shutdown,{failed_to_start_child,user,nouser}},{kernel,start,[normal,[]]}}}"}

Crash dump was written to: erl_crash.dump
Kernel pid terminated (application_controller) ({application_start_failure,kernel,{{shutdown,{failed_to_start_child,user,nouser}},{kernel,start,[normal,[]]}}})