com.google.gerrit.extensions.restapi.RestApiException: Error inserting change/patchset
      at com.google.gerrit.server.git.receive.ReceiveCommits$1.apply(ReceiveCommits.java:288)
      at com.google.gerrit.server.git.receive.ReceiveCommits$1.apply(ReceiveCommits.java:279)
      at com.google.gerrit.server.git.receive.ReceiveCommits.insertChangesAndPatchSets(ReceiveCommits.java:721)
      at com.google.gerrit.server.git.receive.ReceiveCommits.processCommands(ReceiveCommits.java:551)
      at com.google.gerrit.server.git.receive.AsyncReceiveCommits$Worker.run(AsyncReceiveCommits.java:113)
      at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
      at com.google.gerrit.server.util.RequestScopePropagator.lambda$cleanup$1(RequestScopePropagator.java:212)
      at com.google.gerrit.server.util.RequestScopePropagator.lambda$context$0(RequestScopePropagator.java:191)
      at com.google.inject.servlet.ServletScopes$4.call(ServletScopes.java:447)
      at com.google.gerrit.server.util.RequestScopePropagator$1.call(RequestScopePropagator.java:94)
      at com.google.gerrit.server.util.RequestScopePropagator$2.run(RequestScopePropagator.java:125)
      at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
      at java.util.concurrent.FutureTask.run(FutureTask.java:266)
      at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
      at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
      at com.google.gerrit.server.git.WorkQueue$Task.run(WorkQueue.java:558)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
      at java.lang.Thread.run(Thread.java:748)
Caused by: com.google.gerrit.server.update.UpdateException: com.google.gerrit.server.git.LockFailureException: Update aborted with one or more lock failures: PackedBatchRefUpdate[
UPDATE: 9da8f6c3f27282aa10375bb97592cbe86db99d24 7f34f377a425e0a53504355e991d9ccf4eb40de6 refs/heads/wmf/stable (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 a160d8dc8e2dd08b3a39dc4518eb6d79f8b27371 refs/cache-automerge/49/c95354b0d0f18594ab18ccb3e688023776a19b (LOCK_FAILURE)
CREATE: 0000000000000000000000000000000000000000 a160d8dc8e2dd08b3a39dc4518eb6d79f8b27371 refs/cache-automerge/4a/26edef63545e8df7672a7377312a982645d192 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 c5fb33431702aa240c9e3e6f4df81c20753ea691 refs/cache-automerge/ec/5042da3c94c4309adbe7260deeb57987c899e6 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 ee96cf5be35f53f773aaf34d79d5f092684f142c refs/tags/release/2018-06-27/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 84d0bf81592addc58c507c5928c73d788ec25897 refs/tags/release/2018-07-11/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 f0d17f2980e6772a5b0ff3797235d9a269e5ec6b refs/tags/release/2018-07-25/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 f6876bc217249537106dbd402c52dcd49e6579aa refs/tags/release/2018-08-08/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 31306ea9411cc4a8e753ebdda596e53ba27d4fcc refs/tags/release/2018-08-23/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 79098de05731eef7fd9a00ec8b82d0409a76c109 refs/tags/release/2019-02-20/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 7a6592b252d0d3eff708f7340b35e2fa878f22ee refs/tags/release/2019-02-27/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 352f80aad84bee5f23fc0a5cc5a165614eb5ab10 refs/tags/release/2019-03-07/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 808cc44224898c084151fc9672292011ca3800f3 refs/tags/release/2019-03-20/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 bcecf822132120352752522184d16a01a027f6a7 refs/tags/release/2019-05-08/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 3c1377ac4076b641d19af59f34780cff65405040 refs/tags/release/2019-07-03/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 856842fc98d2257995ca7d9d362851d9e2fa8f68 refs/tags/release/2019-08-14/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 557768e29672bb448bf54d212c4d8fd3b5d9241c refs/tags/release/2019-08-22/1 (REJECTED_OTHER_REASON: transaction aborted)
]
      at com.google.gerrit.server.update.BatchUpdate.wrapAndThrowException(BatchUpdate.java:233)
      at com.google.gerrit.server.update.NoteDbBatchUpdate.execute(NoteDbBatchUpdate.java:157)
      at com.google.gerrit.server.update.NoteDbBatchUpdate.execute(NoteDbBatchUpdate.java:295)
      at com.google.gerrit.server.update.BatchUpdate.execute(BatchUpdate.java:283)
      at com.google.gerrit.server.git.receive.ReceiveCommits.insertChangesAndPatchSets(ReceiveCommits.java:719)
      ... 16 more
Caused by: com.google.gerrit.server.git.LockFailureException: Update aborted with one or more lock failures: PackedBatchRefUpdate[
UPDATE: 9da8f6c3f27282aa10375bb97592cbe86db99d24 7f34f377a425e0a53504355e991d9ccf4eb40de6 refs/heads/wmf/stable (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 a160d8dc8e2dd08b3a39dc4518eb6d79f8b27371 refs/cache-automerge/49/c95354b0d0f18594ab18ccb3e688023776a19b (LOCK_FAILURE)
CREATE: 0000000000000000000000000000000000000000 a160d8dc8e2dd08b3a39dc4518eb6d79f8b27371 refs/cache-automerge/4a/26edef63545e8df7672a7377312a982645d192 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 c5fb33431702aa240c9e3e6f4df81c20753ea691 refs/cache-automerge/ec/5042da3c94c4309adbe7260deeb57987c899e6 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 ee96cf5be35f53f773aaf34d79d5f092684f142c refs/tags/release/2018-06-27/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 84d0bf81592addc58c507c5928c73d788ec25897 refs/tags/release/2018-07-11/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 f0d17f2980e6772a5b0ff3797235d9a269e5ec6b refs/tags/release/2018-07-25/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 f6876bc217249537106dbd402c52dcd49e6579aa refs/tags/release/2018-08-08/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 31306ea9411cc4a8e753ebdda596e53ba27d4fcc refs/tags/release/2018-08-23/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 79098de05731eef7fd9a00ec8b82d0409a76c109 refs/tags/release/2019-02-20/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 7a6592b252d0d3eff708f7340b35e2fa878f22ee refs/tags/release/2019-02-27/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 352f80aad84bee5f23fc0a5cc5a165614eb5ab10 refs/tags/release/2019-03-07/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 808cc44224898c084151fc9672292011ca3800f3 refs/tags/release/2019-03-20/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 bcecf822132120352752522184d16a01a027f6a7 refs/tags/release/2019-05-08/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 3c1377ac4076b641d19af59f34780cff65405040 refs/tags/release/2019-07-03/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 856842fc98d2257995ca7d9d362851d9e2fa8f68 refs/tags/release/2019-08-14/1 (REJECTED_OTHER_REASON: transaction aborted)
CREATE: 0000000000000000000000000000000000000000 557768e29672bb448bf54d212c4d8fd3b5d9241c refs/tags/release/2019-08-22/1 (REJECTED_OTHER_REASON: transaction aborted)
]
      at com.google.gerrit.server.update.RefUpdateUtil.checkResults(RefUpdateUtil.java:77)
      at com.google.gerrit.server.update.RefUpdateUtil.executeChecked(RefUpdateUtil.java:38)
      at com.google.gerrit.server.notedb.NoteDbUpdateManager.execute(NoteDbUpdateManager.java:638)
      at com.google.gerrit.server.notedb.NoteDbUpdateManager.execute(NoteDbUpdateManager.java:604)
      at com.google.gerrit.server.update.NoteDbBatchUpdate$ChangesHandle.execute(NoteDbBatchUpdate.java:352)
      at com.google.gerrit.server.update.NoteDbBatchUpdate.execute(NoteDbBatchUpdate.java:98)
      ... 19 more