shino's interests

You are running a non-distributed node. The pid looks like it belongs to
a distributed node. Seems like only known/real "pid prefixes" are allowed.

()23> rpc:call(P, erlang, whereis, [global_name_server]).
<6440.11.0>
()24> list_to_pid(pid_to_list(v(-1))).
<6440.11.0>
()25> list_to_pid("<42.11.0>").
** exception error: bad argument
     in function  list_to_pid/1
        called as list_to_pid("<42.11.0>")
()26> list_to_pid("<6440.42.0>").
<6440.42.0>