$ perl crap2.pl 
Hello Nurse!
Uncaught exception from user code:
        Odd number of parameters in call to main::qux when named parameters were expected
 at crap2.pl line 25
        main::qux('test') called at crap2.pl line 31
 at crap2.pl line 25
        main::qux('test') called at crap2.pl line 31