Runtime error on connection problem

[oldjus]

Ihors-MacBook-Air:~ istar$ ethereum -mine
2014/06/23 16:37:34 UPnP failed write udp4: i/o timeout
2014/06/23 16:37:34 [CHAIN] Last known block height #0
2014/06/23 16:37:34 Last block: 114fffb06203466bbc6351bac2f0c1948ce49c0a9d5ba032155c45318fc7ff85
2014/06/23 16:37:34 Starting Ethereum v0.5.14
2014/06/23 16:37:34 Ready and accepting connections
2014/06/23 16:37:34 [SERV] Retrieving seed nodes
2014/06/23 16:37:34 [SERV] Found DNS Go Peer: 94.242.229.217:30303
2014/06/23 16:37:35 [SERV] Found DNS Bootstrap Peer: 54.200.139.158:30303
2014/06/23 16:37:36 [SERV] Added peer (94.242.229.217:30303) 1 / 10
2014/06/23 16:37:36 Requesting blockchain 114fffb0... from peer 94.242.229.217:30303
2014/06/23 16:37:36 [PEER] connected 94.242.229.217:30303 Ethereum(G)/v0.5.14//linux/Go [Peer discovery | Block chain relaying | Transaction relaying]
2014/06/23 16:37:39 [PEER] Can't send message: write tcp 94.242.229.217:30303: broken pipe
2014/06/23 16:37:39 [PEER] Can't send message: write tcp 94.242.229.217:30303: broken pipe
2014/06/23 16:37:42 Miner started
2014/06/23 16:37:42 (+) 88d1a8addcb43265c76d3ba4478fb9ab44a9ad66
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x88 pc=0x4092b8e]

goroutine 65 [running]:
runtime.panic(0x45bf9e0, 0x4a4bc04)
/usr/local/Cellar/go/1.3/libexec/src/pkg/runtime/panic.c:279 +0xf5
github.com/ethereum/eth-go/ethchain.(_Block).CalcGasLimit(0xc208920360, 0x0, 0x14)
/private/tmp/go-ethereum-iN4S/src/github.com/ethereum/eth-go/ethchain/block.go:162 +0xae
github.com/ethereum/eth-go/ethminer.(_Miner).mineNewBlock(0xc208940120)
/private/tmp/go-ethereum-iN4S/src/github.com/ethereum/eth-go/ethminer/miner.go:144 +0x267
github.com/ethereum/eth-go/ethminer.(_Miner).listener(0xc208940120)
/private/tmp/go-ethereum-iN4S/src/github.com/ethereum/eth-go/ethminer/miner.go:117 +0xa2e
created by github.com/ethereum/eth-go/ethminer.(_Miner).Start
/private/tmp/go-ethereum-iN4S/src/github.com/ethereum/eth-go/ethminer/miner.go:60 +0x2f

goroutine 16 [chan receive]:
main.main()
/private/tmp/go-ethereum-iN4S/src/ethereum/ethereum.go:192 +0xbd8

goroutine 19 [finalizer wait]:
runtime.park(0x4027280, 0x4a71ca8, 0x4a4eec9)
/usr/local/Cellar/go/1.3/libexec/src/pkg/runtime/proc.c:1369 +0x89
runtime.parkunlock(0x4a71ca8, 0x4a4eec9)
/usr/local/Cellar/go/1.3/libexec/src/pkg/runtime/proc.c:1385 +0x3b
runfinq()
/usr/local/Cellar/go/1.3/libexec/src/pkg/runtime/mgc0.c:2644 +0xcf
runtime.goexit()
/usr/local/Cellar/go/1.3/libexec/src/pkg/runtime/proc.c:1445

goroutine 17 [syscall]:
runtime.goexit()
/usr/local/Cellar/go/1.3/libexec/src/pkg/runtime/proc.c:1445

goroutine 20 [syscall]:
os/signal.loop()
/usr/local/Cellar/go/1.3/libexec/src/pkg/os/signal/signal_unix.go:21 +0x1e
created by os/signal.init·1
/usr/local/Cellar/go/1.3/libexec/src/pkg/os/signal/signal_unix.go:27 +0x32

goroutine 22 [select]:
github.com/syndtr/goleveldb/leveldb.(*DB).compactionError(0xc20807e000)
/usr/local/opt/eth-go/src/github.com/syndtr/goleveldb/leveldb/db_compaction.go:117 +0x202
created by github.com/syndtr/goleveldb/leveldb.openDB
/usr/local/opt/eth-go/src/github.com/syndtr/goleveldb/leveldb/db.go:116 +0x46c

goroutine 23 [select]:
github.com/syndtr/goleveldb/leveldb.(*DB).compaction(0xc20807e000)
/usr/local/opt/eth-go/src/github.com/syndtr/goleveldb/leveldb/db_compaction.go:447 +0x77d
created by github.com/syndtr/goleveldb/leveldb.openDB
/usr/local/opt/eth-go/src/github.com/syndtr/goleveldb/leveldb/db.go:119 +0x4ae

goroutine 24 [select]:
github.com/syndtr/goleveldb/leveldb.(*DB).writeJournal(0xc20807e000)
/usr/local/opt/eth-go/src/github.com/syndtr/goleveldb/leveldb/db_write.go:36 +0x14c
created by github.com/syndtr/goleveldb/leveldb.openDB
/usr/local/opt/eth-go/src/github.com/syndtr/goleveldb/leveldb/db.go:120 +0x4c6

goroutine 26 [select]:
github.com/ethereum/eth-go/ethchain.(_TxPool).queueHandler(0xc208004f00)
/private/tmp/go-ethereum-iN4S/src/github.com/ethereum/eth-go/ethchain/transaction_pool.go:204 +0x53b
created by github.com/ethereum/eth-go/ethchain.(_TxPool).Start
/private/tmp/go-ethereum-iN4S/src/github.com/ethereum/eth-go/ethchain/transaction_pool.go:277 +0x2f

goroutine 28 [chan receive]:
main.func·002()
/private/tmp/go-ethereum-iN4S/src/ethereum/ethereum.go:27 +0xf0
created by main.RegisterInterrupt
/private/tmp/go-ethereum-iN4S/src/ethereum/ethereum.go:30 +0x63

goroutine 29 [IO wait]:
net.runtime_pollWait(0x4c2b630, 0x72, 0x0)
/usr/local/Cellar/go/1.3/libexec/src/pkg/runtime/netpoll.goc:146 +0x66
net.(_pollDesc).Wait(0xc2080294f0, 0x72, 0x0, 0x0)
/usr/local/Cellar/go/1.3/libexec/src/pkg/net/fd_poll_runtime.go:84 +0x46
net.(_pollDesc).WaitRead(0xc2080294f0, 0x0, 0x0)
/usr/local/Cellar/go/1.3/libexec/src/pkg/net/fd_poll_runtime.go:89 +0x42
net.(_netFD).accept(0xc208029490, 0x4847688, 0x0, 0x4c296a0, 0x23)
/usr/local/Cellar/go/1.3/libexec/src/pkg/net/fd_unix.go:409 +0x343
net.(_TCPListener).AcceptTCP(0xc2080580d8, 0x0, 0x0, 0x0)
/usr/local/Cellar/go/1.3/libexec/src/pkg/net/tcpsock_posix.go:234 +0x5d
net.(_TCPListener).Accept(0xc2080580d8, 0x0, 0x0, 0x0, 0x0)
/usr/local/Cellar/go/1.3/libexec/src/pkg/net/tcpsock_posix.go:244 +0x4b
github.com/ethereum/eth-go.(_Ethereum).peerHandler(0xc2080260b0, 0x4c2ba70, 0xc2080580d8)
/private/tmp/go-ethereum-iN4S/src/github.com/ethereum/eth-go/ethereum.go:423 +0x30
created by github.com/ethereum/eth-go.(*Ethereum).Start
/private/tmp/go-ethereum-iN4S/src/github.com/ethereum/eth-go/ethereum.go:350 +0x2ce

goroutine 30 [chan receive]:
github.com/ethereum/eth-go.(_Ethereum).ReapDeadPeerHandler(0xc2080260b0)
/private/tmp/go-ethereum-iN4S/src/github.com/ethereum/eth-go/ethereum.go:332 +0x66
created by github.com/ethereum/eth-go.(_Ethereum).Start
/private/tmp/go-ethereum-iN4S/src/github.com/ethereum/eth-go/ethereum.go:358 +0x1a8

goroutine 33 [sleep]:
time.Sleep(0x12a05f200)
/usr/local/Cellar/go/1.3/libexec/src/pkg/runtime/time.goc:39 +0x31
net.func·019()
/usr/local/Cellar/go/1.3/libexec/src/pkg/net/dnsclient_unix.go:183 +0x56
created by net.loadConfig
/usr/local/Cellar/go/1.3/libexec/src/pkg/net/dnsclient_unix.go:212 +0x153

goroutine 34 [IO wait]:
net.runtime_pollWait(0x4c2b4d0, 0x77, 0x0)
/usr/local/Cellar/go/1.3/libexec/src/pkg/runtime/netpoll.goc:146 +0x66
net.(_pollDesc).Wait(0xc208029790, 0x77, 0x0, 0x0)
/usr/local/Cellar/go/1.3/libexec/src/pkg/net/fd_poll_runtime.go:84 +0x46
net.(_pollDesc).WaitWrite(0xc208029790, 0x0, 0x0)
/usr/local/Cellar/go/1.3/libexec/src/pkg/net/fd_poll_runtime.go:93 +0x42
net.(_netFD).connect(0xc208029730, 0x0, 0x0, 0x4c2a6e8, 0xc208952400, 0x0, 0x0)
/usr/local/Cellar/go/1.3/libexec/src/pkg/net/fd_unix.go:104 +0x17a
net.(_netFD).dial(0xc208029730, 0x4c2baa8, 0x0, 0x4c2baa8, 0xc208902ff0, 0xecb3a24a9, 0x32dcd8ec, 0x4a74120, 0x4847688, 0x0, ...)
/usr/local/Cellar/go/1.3/libexec/src/pkg/net/sock_posix.go:121 +0x3b2
net.socket(0x46492c0, 0x3, 0x2, 0x1, 0x0, 0xc208902f00, 0x4c2baa8, 0x0, 0x4c2baa8, 0xc208902ff0, ...)
/usr/local/Cellar/go/1.3/libexec/src/pkg/net/sock_posix.go:91 +0x424
net.internetSocket(0x46492c0, 0x3, 0x4c2baa8, 0x0, 0x4c2baa8, 0xc208902ff0, 0xecb3a24a9, 0x32dcd8ec, 0x4a74120, 0x1, ...)
/usr/local/Cellar/go/1.3/libexec/src/pkg/net/ipsock_posix.go:137 +0x161
net.dialTCP(0x46492c0, 0x3, 0x0, 0xc208902ff0, 0xecb3a24a9, 0x32dcd8ec, 0x4a74120, 0x4c9ebc0, 0x0, 0x0)
/usr/local/Cellar/go/1.3/libexec/src/pkg/net/tcpsock_posix.go:156 +0x13a
net.dialSingle(0x46492c0, 0x3, 0xc208952360, 0x14, 0x0, 0x0, 0x4c2ba40, 0xc208902ff0, 0xecb3a24a9, 0x32dcd8ec, ...)
/usr/local/Cellar/go/1.3/libexec/src/pkg/net/dial.go:238 +0x3ef
net.func·016(0xecb3a24a9, 0x32dcd8ec, 0x4a74120, 0x0, 0x0, 0x0, 0x0)
/usr/local/Cellar/go/1.3/libexec/src/pkg/net/dial.go:164 +0x132
net.dial(0x46492c0, 0x3, 0x4c2ba40, 0xc208902ff0, 0x4c9ee40, 0xecb3a24a9, 0x32dcd8ec, 0x4a74120, 0x0, 0x0, ...)
/usr/local/Cellar/go/1.3/libexec/src/pkg/net/fd_unix.go:40 +0x75
net.(*Dialer).Dial(0xc20890e300, 0x46492c0, 0x3, 0xc208952360, 0x14, 0x0, 0x0, 0x0, 0x0)
/usr/local/Cellar/go/1.3/libexec/src/pkg/net/dial.go:171 +0x44f
net.DialTimeout(0x46492c0, 0x3, 0xc208952360, 0x14, 0x2540be400, 0x0, 0x0, 0x0, 0x0)
/usr/local/Cellar/go/1.3/libexec/src/pkg/net/dial.go:151 +0xda
github.com/ethereum/eth-go.func·010()
/private/tmp/go-ethereum-iN4S/src/github.com/ethereum/eth-go/peer.go:176 +0x64
created by github.com/ethereum/eth-go.NewOutboundPeer
/private/tmp/go-ethereum-iN4S/src/github.com/ethereum/eth-go/peer.go:190 +0x149