Thread 1 terminated abnormally: Can't locate object method "blessed" via package
 "Can't locate object method "update" via package "Class::MOP::Class::__ANON__::
SERIAL::2" at thread_test.pl line 115.
" (perhaps you forgot to load "Can't locate object method "update" via package "
Class::MOP::Class::__ANON__::SERIAL::2" at thread_test.pl line 115.
"?) at thread_test.pl line 118.