Flake: HedgedObjectReadSourceTest.HedgeOpenFailureReleasesSlot

https://storage.googleapis.com/cloud-cpp-community-publiclogs/logs/google-cloud-cpp/16412/acd756cac86341327010db887393348eaabb9831/ubuntu-22.04-cmake-oldest-deps-__default__/log-412127b2-3ff0-4b33-a2dc-363f228a0a1b.txt

```
Step #2 - "build.sh": [ RUN ] HedgedObjectReadSourceTest.HedgeOpenFailureReleasesSlot
Step #2 - "build.sh":
Step #2 - "build.sh": GMOCK WARNING:
Step #2 - "build.sh": Uninteresting mock function call - returning default value.
Step #2 - "build.sh": Function call: Close()
Step #2 - "build.sh": Returns: 104-byte object
Step #2 - "build.sh": NOTE: You can safely ignore the above warning unless this call should not happen. Do not suppress it by blindly adding an EXPECT_CALL() if you don't mean to enforce the call. See https://github.com/google/googletest/blob/main/docs/gmock_cook_book.md#knowing-when-to-expect-useoncall for details.
Step #2 - "build.sh": /workspace/google/cloud/storage/internal/hedged_object_read_source_test.cc:316: Failure
Step #2 - "build.sh": Value of: result
Step #2 - "build.sh": Expected: code is equal to OK and message is anything
Step #2 - "build.sh": Actual: 304-byte object <90-78 6E-CB 76-55 00-00 00-00 00-00 00-00 00-00 A8-7E 8B-CA 76-55 00-00 28-C1 DA-32 FF-7F 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 ... 30-10 00-7C 21-7F 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00>, whose status is UNAVAILABLE: open failed, with a code that isn't equal to OK, but a message that is anything
Step #2 - "build.sh":
Step #2 - "build.sh": [ FAILED ] HedgedObjectReadSourceTest.HedgeOpenFailureReleasesSlot (30 ms)

```

Commencez par internal/hedged_object_read_source_test.cc, autour de la ligne 316, et exécutez HedgedObjectReadSourceTest.HedgeOpenFailureReleasesSlot en utilisant le journal de build lié pour comparaison. Déterminez pourquoi le test reçoit UNAVAILABLE au lieu de OK et identifiez la cause de l’échec intermittent. Le travail est considéré comme terminé lorsque le test ne présente plus de fluctuations d’échec et que son résultat attendu est fiable.

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