Did it again without an error message or anything. Just stops. Here is the log
10:42:23:710 12f8 watchdog - thread 5 (gpu2), hb time 15
10:42:23:726 12f8 watchdog - thread 6 (gpu3), hb time 47
10:42:23:726 12f8 watchdog - thread 7 (gpu3), hb time 234
10:42:23:726 12f8 watchdog - thread 8 (gpu4), hb time 234
10:42:23:742 12f8 watchdog - thread 9 (gpu4), hb time 63
10:42:23:742 12f8 watchdog - thread 10 (gpu5), hb time 250
10:42:23:742 12f8 watchdog - thread 11 (gpu5), hb time 63
10:42:23:742 12f8 watchdog - thread 12 (gpu6), hb time 188
10:42:23:742 12f8 watchdog - thread 13 (gpu6), hb time 47
10:42:23:742 12f8 watchdog - thread 14 (gpu7), hb time 250
10:42:23:757 12f8 watchdog - thread 15 (gpu7), hb time 78
10:42:25:295 2408 sent: {"id":6,"jsonrpc":"2.0","method":"eth_submitHashrate","params":["0xcaf2478", "0x00000000000000000000000000000000000000000000000000000000c357bad3"]}
10:42:28:126 1300 GPU0 t=82C fan=55%, GPU1 t=82C fan=55%, GPU2 t=68C fan=53%, GPU3 t=76C fan=51%, GPU4 t=77C fan=52%, GPU5 t=81C fan=54%, GPU6 t=82C fan=55%, GPU7 t=74C fan=50%
10:42:32:165 19f4 checked ETH share on CPU, spent 10ms
10:42:32:165 19f4 sent: {"id":16,"method":"eth_submitWork","params":["0x39103cf03ff2c4ed","0xb9bcede3c13f6d81d0d4d4b672e98db13c3486f60a065aaf56035cd6b82a6b00","0xc68e3e70c228d8a5d113796932d7971512c9b768fe62dfbed09793bc68086a39"]}
10:42:32:180 19f4 ETH: put share nonce 39103cf03ff2c4ed
10:42:32:212 2408 ETH: 05/04/18-10:42:32 - SHARE FOUND - (GPU 6)
10:42:32:321 2408 buf: {"jsonrpc":"2.0","id":16,"result":true}
10:42:32:321 2408 ETH: Share accepted (140 ms)!
10:42:33:072 2038 checked ETH share on CPU, spent 9ms
10:42:33:088 2038 sent: {"id":12,"method":"eth_submitWork","params":["0xb3d55b6841abd5ca","0xb9bcede3c13f6d81d0d4d4b672e98db13c3486f60a065aaf56035cd6b82a6b00","0xed6c06c3de413fb3cccfc2d5055429d44c58d0adbc9f7758b43a48ab16eb25ed"]}
10:42:33:088 2038 ETH: put share nonce b3d55b6841abd5ca
10:42:33:119 2408 ETH: 05/04/18-10:42:33 - SHARE FOUND - (GPU 2)
10:42:33:244 2408 buf: {"jsonrpc":"2.0","id":12,"result":true}
10:42:33:244 2408 ETH: Share accepted (156 ms)!
10:42:33:463 2408 ETH: checking pool connection...
10:42:33:463 2408 sent: {"worker": "", "jsonrpc": "2.0", "params": [], "id": 3, "method": "eth_getWork"}
10:42:33:603 2408 buf: {"jsonrpc":"2.0","id":0,"result":["0xb9bcede3c13f6d81d0d4d4b672e98db13c3486f60a065aaf56035cd6b82a6b00","0xad15d04b13b18ecbb6bc1c05cefa1e952fe584f2c79fb5f3dbc48656704b0f95","0x000000006df37f675ef6eadf5ab9a2072d44268d97df837e6748956e5c6c2116"]}
10:42:41:508 2408 buf: {"jsonrpc":"2.0","id":0,"result":["0x8f1b39b114e109b7180f53a560461d5fd0dff2f55e8361d9ad7ff65b3c29804c","0xad15d04b13b18ecbb6bc1c05cefa1e952fe584f2c79fb5f3dbc48656704b0f95","0x000000006df37f675ef6eadf5ab9a2072d44268d97df837e6748956e5c6c2116"]}
10:42:41:508 2408 ETH: 05/04/18-10:42:41 - New job from eth-us-east1.nanopool.org:9999
10:42:41:524 2408 target: 0x000000006df37f67 (diff: 10000MH), epoch 185(2.45GB)
10:42:41:540 2408 ETH - Total Speed: 212.881 Mh/s, Total Shares: 64, Rejected: 0, Time: 00:56
10:42:41:555 2408 ETH: GPU0 26.464 Mh/s, GPU1 26.461 Mh/s, GPU2 26.557 Mh/s, GPU3 26.738 Mh/s, GPU4 26.744 Mh/s, GPU5 26.746 Mh/s, GPU6 26.463 Mh/s, GPU7 26.708 Mh/s
10:42:43:494 2408 ETH: checking pool connection...
10:42:43:494 2408 sent: {"worker": "", "jsonrpc": "2.0", "params": [], "id": 3, "method": "eth_getWork"}
10:42:43:635 2408 buf: {"jsonrpc":"2.0","id":0,"result":["0x8f1b39b114e109b7180f53a560461d5fd0dff2f55e8361d9ad7ff65b3c29804c","0xad15d04b13b18ecbb6bc1c05cefa1e952fe584f2c79fb5f3dbc48656704b0f95","0x000000006df37f675ef6eadf5ab9a2072d44268d97df837e6748956e5c6c2116"]}
10:42:45:308 2408 sent: {"id":6,"jsonrpc":"2.0","method":"eth_submitHashrate","params":["0xcaef0d9", "0x00000000000000000000000000000000000000000000000000000000c357bad3"]}
10:42:52:740 19e0 checked ETH share on CPU, spent 9ms
10:42:52:755 19e0 sent: {"id":15,"method":"eth_submitWork","params":["0xd528ed7811d4268f","0x8f1b39b114e109b7180f53a560461d5fd0dff2f55e8361d9ad7ff65b3c29804c","0xc69a6cc98ffc1c96005edaccff10b6622dde7ec4b4ffb3d8017f0ddded84cd00"]}
10:42:52:771 19e0 ETH: put share nonce d528ed7811d4268f
10:42:52:786 2408 ETH: 05/04/18-10:42:52 - SHARE FOUND - (GPU 5)
10:42:52:911 2408 buf: {"jsonrpc":"2.0","id":15,"result":true}
10:42:52:915 2408 ETH: Share accepted (156 ms)!
10:42:53:236 19e8 checked ETH share on CPU, spent 9ms
10:42:53:249 19e8 sent: {"id":13,"method":"eth_submitWork","params":["0x75b89b80129c946a","0x8f1b39b114e109b7180f53a560461d5fd0dff2f55e8361d9ad7ff65b3c29804c","0xc6045ec91e8ed86256dbc5e87fb7bd143279269fa913b2b80abcdea24c73b848"]}
10:42:53:262 19e8 ETH: put share nonce 75b89b80129c946a
10:42:53:288 2408 ETH: 05/04/18-10:42:53 - SHARE FOUND - (GPU 3)
10:42:53:351 2408 buf: {"jsonrpc":"2.0","id":0,"result":["0x334167090f28331af164022f8bae2266248b5db4c1d0ab9b6b614b5acc88e703","0xad15d04b13b18ecbb6bc1c05cefa1e952fe584f2c79fb5f3dbc48656704b0f95","0x000000006df37f675ef6eadf5ab9a2072d44268d97df837e6748956e5c6c2116"]}
10:42:53:351 2408 ETH: 05/04/18-10:42:53 - New job from eth-us-east1.nanopool.org:9999
10:42:53:366 2408 target: 0x000000006df37f67 (diff: 10000MH), epoch 185(2.45GB)
10:42:53:382 2408 ETH - Total Speed: 212.324 Mh/s, Total Shares: 66, Rejected: 0, Time: 00:56
10:42:53:398 2408 ETH: GPU0 26.429 Mh/s, GPU1 26.246 Mh/s, GPU2 26.554 Mh/s, GPU3 26.728 Mh/s, GPU4 26.606 Mh/s, GPU5 26.709 Mh/s, GPU6 26.438 Mh/s, GPU7 26.614 Mh/s
10:42:53:398 2408 buf: {"jsonrpc":"2.0","id":13,"result":true}
10:42:53:413 2408 ETH: Share accepted (141 ms)!
10:42:53:538 2408 ETH: checking pool connection...
10:42:53:538 2408 sent: {"worker": "", "jsonrpc": "2.0", "params": [], "id": 3, "method": "eth_getWork"}
10:42:53:679 2408 buf: {"jsonrpc":"2.0","id":0,"result":["0x334167090f28331af164022f8bae2266248b5db4c1d0ab9b6b614b5acc88e703","0xad15d04b13b18ecbb6bc1c05cefa1e952fe584f2c79fb5f3dbc48656704b0f95","0x000000006df37f675ef6eadf5ab9a2072d44268d97df837e6748956e5c6c2116"]}
10:42:56:523 12f8 em hbt: 16, fm hbt: 125,
10:42:56:523 12f8 watchdog - thread 0 (gpu0), hb time 32
10:42:56:539 12f8 watchdog - thread 1 (gpu0), hb time 203
10:42:56:555 12f8 watchdog - thread 2 (gpu1), hb time 219
10:42:56:570 12f8 watchdog - thread 3 (gpu1), hb time 78
10:42:56:570 12f8 watchdog - thread 4 (gpu2), hb time 78
10:42:56:586 12f8 watchdog - thread 5 (gpu2), hb time 266
10:42:56:586 12f8 watchdog - thread 6 (gpu3), hb time 234
10:42:56:602 12f8 watchdog - thread 7 (gpu3), hb time 63
10:42:56:602 12f8 watchdog - thread 8 (gpu4), hb time 63
10:42:56:617 12f8 watchdog - thread 9 (gpu4), hb time 265
10:42:56:617 12f8 watchdog - thread 10 (gpu5), hb time 265
10:42:56:617 12f8 watchdog - thread 11 (gpu5), hb time 78
10:42:56:617 12f8 watchdog - thread 12 (gpu6), hb time 125
10:42:56:617 12f8 watchdog - thread 13 (gpu6), hb time 281
10:42:56:617 12f8 watchdog - thread 14 (gpu7), hb time 78
10:42:56:633 12f8 watchdog - thread 15 (gpu7), hb time 281
10:42:58:261 1300 GPU0 t=82C fan=55%, GPU1 t=82C fan=55%, GPU2 t=68C fan=53%, GPU3 t=76C fan=51%, GPU4 t=77C fan=52%, GPU5 t=81C fan=54%, GPU6 t=82C fan=55%, GPU7 t=74C fan=50%
10:42:59:157 2408 buf: {"jsonrpc":"2.0","id":0,"result":["0x90479d79d80f64b3b4ca80ae98315366f3453c9f80dcbfd50c045f6bc01b2db6","0xad15d04b13b18ecbb6bc1c05cefa1e952fe584f2c79fb5f3dbc48656704b0f95","0x000000006df37f675ef6eadf5ab9a2072d44268d97df837e6748956e5c6c2116"]}
10:42:59:157 2408 ETH: 05/04/18-10:42:59 - New job from eth-us-east1.nanopool.org:9999
10:42:59:173 2408 target: 0x000000006df37f67 (diff: 10000MH), epoch 185(2.45GB)
10:42:59:189 2408 ETH - Total Speed: 212.777 Mh/s, Total Shares: 66, Rejected: 0, Time: 00:56
10:42:59:204 2408 ETH: GPU0 26.446 Mh/s, GPU1 26.458 Mh/s, GPU2 26.544 Mh/s, GPU3 26.741 Mh/s, GPU4 26.735 Mh/s, GPU5 26.735 Mh/s, GPU6 26.385 Mh/s, GPU7 26.732 Mh/s
10:43:03:555 2408 ETH: checking pool connection...
10:43:03:567 2408 sent: {"worker": "", "jsonrpc": "2.0", "params": [], "id": 3, "method": "eth_getWork"}
10:43:03:695 2408 buf: {"jsonrpc":"2.0","id":0,"result":["0x90479d79d80f64b3b4ca80ae98315366f3453c9f80dcbfd50c045f6bc01b2db6","0xad15d04b13b18ecbb6bc1c05cefa1e952fe584f2c79fb5f3dbc48656704b0f95","0x000000006df37f675ef6eadf5ab9a2072d44268d97df837e6748956e5c6c2116"]}
10:43:05:320 2408 sent: {"id":6,"jsonrpc":"2.0","method":"eth_submitHashrate","params":["0xcaf4180", "0x00000000000000000000000000000000000000000000000000000000c357bad3"]}
10:43:13:588 2408 ETH: checking pool connection...
10:43:13:600 2408 sent: {"worker": "", "jsonrpc": "2.0", "params": [], "id": 3, "method": "eth_getWork"}
10:43:13:728 2408 buf: {"jsonrpc":"2.0","id":0,"result":["0x90479d79d80f64b3b4ca80ae98315366f3453c9f80dcbfd50c045f6bc01b2db6","0xad15d04b13b18ecbb6bc1c05cefa1e952fe584f2c79fb5f3dbc48656704b0f95","0x000000006df37f675ef6eadf5ab9a2072d44268d97df837e6748956e5c6c2116"]}
10:43:22:516 2408 buf: {"jsonrpc":"2.0","id":0,"result":["0x8ad055fa0ce242a32d352ce177b70dea439a217b543e3acfc2bb2ee48b27a67e","0xad15d04b13b18ecbb6bc1c05cefa1e952fe584f2c79fb5f3dbc48656704b0f95","0x000000006df37f675ef6eadf5ab9a2072d44268d97df837e6748956e5c6c2116"]}