Mongod Error on Cloud9

vamsiampolu1@takenote:~/workspace (master) $ ./mongod
2014-11-17T09:00:10.101+0000 ** WARNING: --rest is specified without --httpinterface,
2014-11-17T09:00:10.101+0000 **          enabling http interface
warning: bind_ip of 0.0.0.0 is unnecessary; listens on all ips by default
2014-11-17T09:00:10.106+0000 [initandlisten] MongoDB starting : pid=2274 port=27017 dbpath=data 64-bit host=vamsiampolu1-takenote-1084968
2014-11-17T09:00:10.106+0000 [initandlisten] db version v2.6.5
2014-11-17T09:00:10.106+0000 [initandlisten] git version: e99d4fcb4279c0279796f237aa92fe3b64560bf6
2014-11-17T09:00:10.106+0000 [initandlisten] build info: Linux build8.nj1.10gen.cc 2.6.32-431.3.1.el6.x86_64 #1 SMP Fri Jan 3 21:39:27 UTC 2014 x86_64 BOOST_LIB_VERSION=1_49
2014-11-17T09:00:10.106+0000 [initandlisten] allocator: tcmalloc
2014-11-17T09:00:10.107+0000 [initandlisten] options: { net: { bindIp: "0.0.0.0", http: { RESTInterfaceEnabled: true, enabled: true } }, storage: { dbPath: "data", journal: { enabled: false } } }
**************
Unclean shutdown detected.
Please visit http://dochub.mongodb.org/core/repair for recovery instructions.
*************
2014-11-17T09:00:10.107+0000 [initandlisten] exception in initAndListen: 12596 old lock file, terminating
2014-11-17T09:00:10.107+0000 [initandlisten] dbexit:
2014-11-17T09:00:10.107+0000 [initandlisten] shutdown: going to close listening sockets...
2014-11-17T09:00:10.107+0000 [initandlisten] shutdown: going to flush diaglog...
2014-11-17T09:00:10.107+0000 [initandlisten] shutdown: going to close sockets...
2014-11-17T09:00:10.107+0000 [initandlisten] shutdown: waiting for fs preallocator...
2014-11-17T09:00:10.107+0000 [initandlisten] shutdown: closing all files...
2014-11-17T09:00:10.107+0000 [initandlisten] closeAllFiles() finished
2014-11-17T09:00:10.107+0000 [initandlisten] dbexit: really exiting now