roachtest: unoptimized-query-oracle/disable-rules=all/rand-tables/mem=low failed

**Note:** This build has runtime assertions enabled. If the same failure was hit in a run without assertions enabled, there should be a similar failure without this message. If there isn't one, then this failure is likely due to an assertion violation or (assertion) timeout.

roachtest.unoptimized-query-oracle/disable-rules=all/rand-tables/mem=low [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_Roachtests_RoachtestNightlyGcePrivateBazel/21513554?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_Roachtests_RoachtestNightlyGcePrivateBazel/21513554?buildTab=artifacts#/unoptimized-query-oracle/disable-rules=all/rand-tables/mem=low) on master @ [2bf53f5e2960d67b69a8d3576c03e3e9fc3dae2a](https://github.com/cockroachdb/cockroach/commits/2bf53f5e2960d67b69a8d3576c03e3e9fc3dae2a):

Failed with:

```
(query_comparison_util.go:501).runOneRoundQueryComparison: failed to set random seed. 2216 statements run: dial tcp 10.91.101.199:26257: connect: connection refused
test artifacts and logs in: /artifacts/unoptimized-query-oracle/disable-rules=all/rand-tables/mem=low/run_1
```
Cluster Node to Ip Mapping:
| Node | Public IP | Private IP |
| --- | --- | --- |
| teamcity-21513554-1789192452-86-n1cpu4lm-0001 | | 10.91.101.199 |

Parameters:
- arch=amd64
- cloud=gce
- coverageBuild=false
- cpu=4
- diskCount=0
- encrypted=false
- runtimeAssertionsBuild=true
Help

See: [roachtest README](https://github.com/cockroachdb/cockroach/blob/master/pkg/cmd/roachtest/README.md)

See: [How To Investigate \(internal\)](https://cockroachlabs.atlassian.net/l/c/SSSBr8c7)

See: [Grafana](https://go.crdb.dev/roachtest-grafana/teamcity-21513554/unoptimized-query-oracle-disable-rules-all-rand-tables-mem-low/1789209189477/1789211689757)

See: [Datadog Logs](https://us5.datadoghq.com/logs?query=service%3Aroachtest+%40cluster%3Ateamcity-21513554-1789192452-86-n1cpu4lm&from_ts=1789209189477&to_ts=1789211689757&live=false&storage=flex_tier)

[Improve this report!](https://github.com/cockroachdb/cockroach/tree/master/pkg/cmd/bazci/githubpost/issues)

Jira issue: CRDB-68329

Start with the failure at query_comparison_util.go:501 and inspect the run_1 artifacts and logs linked in the report. Read the roachtest README for investigation context, then determine why the node at 10.91.101.199 refused the connection while setting the random seed. Done means the failure cause is addressed and this roachtest completes successfully.

Written by the indexing model from the issue text.