the stacktrace is: 
````
TypeError: Object.keys called on non-object
    at Function.keys (native)
    at return_meta (/Users/andrewwinterman/dev/unpm/lib/controllers/get_package.js:28:12)
    at /Users/andrewwinterman/dev/unpm/lib/models/Package.js:48:5
    at /Users/andrewwinterman/dev/unpm/lib/utils/guard.js:10:17
    at /Users/andrewwinterman/dev/unpm/node_modules/continuation-local-storage/context.js:76:17
    at /Users/andrewwinterman/dev/unpm/node_modules/unpm-leveldb/index.js:74:7
    at /Users/andrewwinterman/dev/unpm/node_modules/levelup/lib/levelup.js:205:7
    at Object.<anonymous> (/Users/andrewwinterman/dev/unpm/node_modules/memdown/memdown.js:132:5)
    at Object._onImmediate (/Users/andrewwinterman/dev/unpm/node_modules/continuation-local-storage/node_modules/async-listener/glue.js:177:31)
    at processImmediate [as _immediateCallback] (timers.js:330:15)
```