panic!

    1. $ rustc panic.rs && valgrind ./panic
    2. ==4401== Memcheck, a memory error detector
    4. ==4401== Using Valgrind-3.10.0.SVN and LibVEX; rerun with -h for copyright info
    5. ==4401== 
    6. thread '<main>' panicked at 'division by zero', panic.rs:5
    7. ==4401== 
    9. ==4401==   total heap usage: 18 allocs, 18 frees, 1,648 bytes allocated
    10. ==4401== 
    11. ==4401== All heap blocks were freed -- no leaks are possible
    12. ==4401== 
    13. ==4401== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)