Pool crash
At some point today, the pool crashed. Probably at `2019-12-18 04:30:57` (Copenhagen)
I have the core dump, if you should need it.

monero-pool (end-of-file)
```
2019-12-18 04:30:57 TRACE src/pool.c:1513: Got block template: 
{
  "id": "0",
  "jsonrpc": "2.0",
  "result": {
    "blockhashing_blob": "0c0cf1bae6ef052ed0244969f5a7d1dd396310ec90dd58daf3ea793970f0594bb34e403e16915800000000fa9adcad3f2ad7ade80a7d4fbafda0f8b3fbcfcfdc6dd6a4095b07d5a2a4399a01",
    "blocktemplate_blob": "0c0cf1bae6ef052ed0244969f5a7d1dd396310ec90dd58daf3ea793970f0594bb34e403e1691580000000002c3c57901ff87c57901cbe290e8ae3c0273891cf52fa0a0c4621f5ed1ec9ea2b9ac1fa61130267ad2ce06ac47295ad17234010af23c4cc6c0f5c62fb572cfbdd5dae6ca28a613edc6b01ea656adf80cd313d1021100000000000000000000000000000000000000",
    "difficulty": 115403197118,
    "difficulty_top64": 0,
    "expected_reward": 2074150711627,
    "height": 1991303,
    "next_seed_hash": "",
    "prev_hash": "2ed0244969f5a7d1dd396310ec90dd58daf3ea793970f0594bb34e403e169158",
    "reserved_offset": 128,
    "seed_hash": "9d4fe3c9677150caab858e022af03eee8ef2e12cb21afe94c837b4021a81d6ef",
    "seed_height": 1990656,
    "status": "OK",
    "untrusted": false,
    "wide_difficulty": "0x1ade910abe"
  }
}
2019-12-18 04:30:57 TRACE src/pool.c:838: Recycle block template at height: 1991299
2019-12-18 04:30:57 TRACE src/pool.c:1282: Variant: 6
2019-12-18 04:30:57 DEBUG src/pool.c:859: Client 1c855246cd8348479c5ac243c948d83b target now 131424
2019-12-18 04:30:57 TRACE src/pool.c:1146: Client job: {"jsonrpc":"2.0","method":"job","params":{"id":"1c855246cd8348479c5ac243c948d83b","job_id":"da93c500988f4857b00aee6978a6327b","target":"a87f0000","extra_nonce":"ec08000081b4ba43", "pool_wallet":"44ch1jLCFmuHpsq6QMCWxMXMGbMdrEF9AHiMrzqBjPc5WyToE2eoXqEJZV7GpVMPxxCxBewpG9FCjY1riMccS6f8Fq6v5iV","seed_hash":"","next_seed_hash":""}}

2019-12-18 04:30:57 DEBUG src/pool.c:859: Client 89e94783cd3641739b76bdf1806b54b8 target now 50000
2019-12-18 04:30:57 TRACE src/pool.c:1146: Client job: {"jsonrpc":"2.0","method":"job","params":{"id":"89e94783cd3641739b76bdf1806b54b8","job_id":"4568f2fb9bc84fa49a5c6a5ed0448d90","target":"8b4f0100","extra_nonce":"ed08000081b4ba43", "pool_wallet":"44ch1jLCFmuHpsq6QMCWxMXMGbMdrEF9AHiMrzqBjPc5WyToE2eoXqEJZV7GpVMPxxCxBewpG9FCjY1riMccS6f8Fq6v5iV","seed_hash":"","next_seed_hash":""}}

2019-12-18 04:30:57 DEBUG src/pool.c:859: Client d0613edf9e154eedb21761f0471aa6e2 target now 50000
2019-12-18 04:30:57 TRACE src/pool.c:1146: Client job: {"jsonrpc":"2.0","method":"job","params":{"id":"d0613edf9e154eedb21761f0471aa6e2","job_id":"0560b36062fd480b9072656d20fd5b13","target":"8b4f0100","extra_nonce":"ee08000081b4ba43", "pool_wallet":"44ch1jLCFmuHpsq6QMCWxMXMGbMdrEF9AHiMrzqBjPc5WyToE2eoXqEJZV7GpVMPxxCxBewpG9FCjY1riMccS6f8Fq6v5iV","seed_hash":"","next_seed_hash":""}}

2019-12-18 04:30:57 DEBUG src/pool.c:859: Client e025f55e5083494cbd3adfc817f33524 target now 110429
2019-12-18 04:30:57 TRACE src/pool.c:1146: Client job: {"jsonrpc":"2.0","method":"job","params":{"id":"e025f55e5083494cbd3adfc817f33524","job_id":"af86250ff0fc441c8df44bfeeb3117e8","target":"ed970000","extra_nonce":"ef08000081b4ba43", "pool_wallet":"44ch1jLCFmuHpsq6QMCWxMXMGbMdrEF9AHiMrzqBjPc5WyToE2eoXqEJZV7GpVMPxxCxBewpG9FCjY1riMccS6f8Fq6v5iV","seed_hash":"","next_seed_hash":""}}
```

Edit: remove unrelated `monero-wallet-rpc` (pool wallet) log stuff.


Nothing interesting in `monerod` log-file.

xmrig 5.3.1-dev
```
[2019-12-18 04:29:16.007]  cpu  accepted (1194/0) diff 50000 (22 ms)
[2019-12-18 04:29:36.632] speed 10s/60s/15m 1040.9 1045.8 941.9 H/s max 1175.8 H/s
[2019-12-18 04:30:06.668] speed 10s/60s/15m 1040.4 1043.2 939.6 H/s max 1175.8 H/s
[2019-12-18 04:30:20.261]  cpu  accepted (1195/0) diff 50000 (28 ms)
[2019-12-18 04:30:36.700] speed 10s/60s/15m 1046.3 1041.2 946.6 H/s max 1175.8 H/s
[2019-12-18 04:30:57.282] [localhost:8002] read error: "end of file"
[2019-12-18 04:30:57.282]  net  no active pools, stop mining
[2019-12-18 04:31:03.090] [localhost:8002] connect error: "connection refused"
[2019-12-18 04:31:06.736] speed 10s/60s/15m 481.5 1039.1 951.8 H/s max 1175.8 H/s
[2019-12-18 04:31:08.096] [localhost:8002] connect error: "connection refused"
[2019-12-18 04:31:13.098] [localhost:8002] connect error: "connection refused"
[2019-12-18 04:31:18.100] [localhost:8002] connect error: "connection refused"
```
