release-26.3.2-rc: roachtest: activerecord 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.activerecord [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_Roachtests_RoachtestNightlyGcePrivateBazel/21503748?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_Roachtests_RoachtestNightlyGcePrivateBazel/21503748?buildTab=artifacts#/activerecord) on release-26.3.2-rc @ [6149d98a3244ba2a3e4417d9e363da83e213e1b7](https://github.com/cockroachdb/cockroach/commits/6149d98a3244ba2a3e4417d9e363da83e213e1b7):

Failed with:

```
(orm_helpers.go:225).summarizeFailed:
Tests run on Cockroach v26.3.2-dev-6149d98a3244ba2a3e4417d9e363da83e213e1b7
Tests run against activerecord 8.1.0
1050 Total Tests Run
1042 tests passed
8 tests failed
2 tests skipped
10 tests ignored
0 tests passed unexpectedly
8 tests failed unexpectedly
0 tests expected failed but skipped
1 test expected failed but not run
---
--- FAIL: HasManyAssociationsTest#test_dont_call_save_callbacks_twice_on_has_many (unexpected)
--- FAIL: HasManyAssociationsTest#test_set_ids_for_association_on_new_record_applies_association_correctly (unexpected)
--- FAIL: SerializedAttributeTest#test_json_symbolize_names_returns_symbolized_names (unexpected)
--- FAIL: SerializedAttributeTest#test_decorated_type_with_type_for_attribute (unexpected)
--- FAIL: SerializedAttributeTest#test_serialized_attribute_calling_dup_method (unexpected)
--- FAIL: SerializedAttributeTest#test_serialized_json_attribute_returns_unserialized_value (unexpected)
--- FAIL: SerializedAttributeTest#test_decorated_type_with_decorator_block (unexpected)
--- FAIL: SerializedAttributeTest#test_json_read_legacy_null (unexpected)
For a full summary look at the activerecord artifacts
An updated blocklist (activeRecordBlocklist) is available in the artifacts' activerecord log
test artifacts and logs in: /artifacts/activerecord/run_1
```
Cluster Node to Ip Mapping:
| Node | Public IP | Private IP |
| --- | --- | --- |
| teamcity-21503748-1788844122-08-n1cpu4-0001 | | 10.91.97.202 |

Parameters:
- arch=amd64
- cloud=gce
- coverageBuild=false
- cpu=4
- diskCount=0
- encrypted=false
- fs=ext4
- localSSD=true
- metamorphicDRPC=true
- metamorphicLeases=expiration
- metamorphicWriteBuffering=true
- 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-21503748/activerecord/1788844306815/1788845243574)

See: [Datadog Logs](https://us5.datadoghq.com/logs?query=service%3Aroachtest+%40cluster%3Ateamcity-21503748-1788844122-08-n1cpu4&from_ts=1788844306815&to_ts=1788845243574&live=false&storage=flex_tier)

Same failure on other branches

- #174827 release-26.2.7-rc: roachtest: activerecord failed [C-test-failure O-roachtest O-robot T-sql-foundations branch-release-26.2.7-rc release-blocker]
- #174826 roachtest: activerecord failed [C-test-failure O-roachtest O-robot T-sql-foundations branch-release-25.4.17-rc release-blocker]
- #174371 roachtest: activerecord failed [C-test-failure O-roachtest O-robot P-2 T-sql-foundations branch-master]

/cc @cockroachlabs/sql-foundations

[This test on roachdash](https://roachdash.crdb.dev/?filter=status:open%20t:.*activerecord.*&sort=title+created&display=lastcommented+project) | [Improve this report!](https://github.com/cockroachdb/cockroach/tree/master/pkg/cmd/bazci/githubpost/issues)

Jira issue: CRDB-68020

Jira issue: CRDB-68066