$ valgrind --tool=memcheck target/debug/rusty-v8-memtest
==1499== HEAP SUMMARY:
==1499== in use at exit: 36,733 bytes in 659 blocks
==1499== total heap usage: 3,129 allocs, 2,470 frees, 2,766,643 bytes allocated
==1499==
==1499== LEAK SUMMARY:
==1499== definitely lost: 1,953 bytes in 14 blocks
==1499== indirectly lost: 1,443 bytes in 23 blocks
==1499== possibly lost: 1,440 bytes in 5 blocks
==1499== still reachable: 31,897 bytes in 617 blocks
==1499== suppressed: 0 bytes in 0 blocks
==1499== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
$ valgrind --tool=memcheck target/debug/rusty-v8-memtest
==1499== HEAP SUMMARY:
==1499== in use at exit: 36,733 bytes in 659 blocks
==1499== total heap usage: 3,129 allocs, 2,470 frees, 2,766,643 bytes allocated
==1499==
==1499== LEAK SUMMARY:
==1499== definitely lost: 1,953 bytes in 14 blocks
==1499== indirectly lost: 1,443 bytes in 23 blocks
==1499== possibly lost: 1,440 bytes in 5 blocks
==1499== still reachable: 31,897 bytes in 617 blocks
==1499== suppressed: 0 bytes in 0 blocks
==1499== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)