basalt-26.3.2-rc-20260908: backup: TestRestoreJobMessages failed

backup.TestRestoreJobMessages [failed](https://mesolite.cluster.engflow.com/invocations/default/f0916551-4348-4015-a964-7d1ed87aeec5?testReportRun=1&testReportShard=5&testReportAttempt=1#targets-Ly9wa2cvYmFja3VwOmJhY2t1cF90ZXN0) on basalt-26.3.2-rc-20260908 @ [807558e5e81666af257c811e925e4cae570abc28](https://github.com/cockroachdb/cockroach/commits/807558e5e81666af257c811e925e4cae570abc28):

```
=== RUN TestRestoreJobMessages
test_log_scope.go:172: test logs captured to: outputs.zip/logTestRestoreJobMessages2364751629
test_log_scope.go:82: use -show-logs to present logs inline
test_server_shim.go:168: automatically injected a shared process virtual cluster under test; see comment at top of test_server_shim.go for details.
restore_test.go:276:
Error Trace: pkg/backup/restore_test.go:276
pkg/testutils/soon.go:76
pkg/util/retry/retry.go:393
pkg/testutils/soon.go:82
pkg/testutils/soon.go:59
pkg/testutils/soon.go:38
pkg/backup/restore_test.go:263
Error: "2" is not greater than "2"
Test: TestRestoreJobMessages
testutils.go:385: no Invalid Descriptors
panic.go:694: -- test log scope end --
test logs left over in: outputs.zip/logTestRestoreJobMessages2364751629
--- FAIL: TestRestoreJobMessages (29.25s)
```

Parameters:
- attempt=1
- race=true
- run=1
- shard=5
Help

See also: [How To Investigate a Go Test Failure \(internal\)](https://cockroachlabs.atlassian.net/l/c/HgfXfJgM)

Same failure on other branches

- #173769 backup: TestRestoreJobMessages failed [A-disaster-recovery C-test-failure O-robot P-3 T-disaster-recovery branch-master v26.4.0-prerelease]

/cc @cockroachlabs/disaster-recovery

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

Start with pkg/backup/restore_test.go around lines 263-276 and inspect the captured logs for TestRestoreJobMessages, including the failure from the race-enabled run. Compare the same failure reported in issue #173769 and identify why the expected count is not increasing. Done means TestRestoreJobMessages passes without the reported assertion failure.

Written by the indexing model from the issue text.