backport fixes in master branch

[Neutron3529]

Description

In the current version of KLDivLoss, the return value is not the same value calculated by SoftmaxCrossEntropyLoss, which is not documented. It may due to the incorrect settings which using mean rather than sum dealing with the return value.
I provide a fix of this setting, which will keep the return value of KLDivLoss and SoftmaxCrossEntropyLoss almost the same when from_logits=False and sparse_label=False are set to these functions seperately.
Now, the behave of KLDivLoss is exactly the same to what the document say.

to reproduce the misbehave in the current master branch:

import mxnet as mx
a=mx.nd.array([[-1,1],[1,-1]])
b=mx.nd.array([1,0]).one_hot(2)
TrueLoss=mx.gluon.loss.SoftmaxCrossEntropyLoss(sparse_label=False)
FalseLoss=mx.gluon.loss.KLDivLoss(from_logits=False)
c=TrueLoss(a,b)
d=FalseLoss(a,b)*a.shape[-1]
assert((c-d).abs().sum()==0 and a.shape[-1]==2)

Checklist

Essentials

Please feel free to remove inapplicable items for your PR.

• The PR title starts with [MXNET-$JIRA_ID], where $JIRA_ID refers to the relevant JIRA issue created (except PRs with tiny changes)
• Changes are complete (i.e. I finished coding on this PR)
• All changes have test coverage:
• Unit tests are added for small changes to verify correctness (e.g. adding a new operator)
• Nightly tests are added for complicated/long-running ones (e.g. changing distributed kvstore)
• Build tests will be added for build configuration changes (e.g. adding a new build option with NCCL)
• Code is well-documented:
• For user-facing API changes, API doc string has been updated.
• For new C++ functions in header files, their functionalities and arguments are documented.
• For new examples, README.md is added to explain the what the example does, the source of the dataset, expected performance on test set and reference to the original paper if applicable
• Check the API doc at https://mxnet-ci-doc.s3-accelerate.dualstack.amazonaws.com/PR-$PR_ID/$BUILD_ID/index.html
• To the best of my knowledge, examples are either not affected by this change, or have been fixed to be compatible with this change

Changes

• Now, the behave of KLDivLoss is exactly the same to what the document say.

Comments

• If this change is a backward incompatible change, why must this change be made.
• Interesting edge cases to note here

[mxnet-bot]

Hey @Neutron3529 , Thanks for submitting the PR
All tests are already queued to run once. If tests fail, you can trigger one or more tests again with the following commands:

• To trigger all jobs: @mxnet-bot run ci [all]
• To trigger specific jobs: @mxnet-bot run ci [job1, job2]

---

CI supported jobs: [centos-gpu, unix-cpu, website, unix-gpu, miscellaneous, windows-gpu, sanity, centos-cpu, edge, clang, windows-cpu]

---

Note:
Only following 3 categories can trigger CI :PR Author, MXNet Committer, Jenkins Admin.
All CI tests must pass before the PR can be merged.

[Neutron3529]

@mxnet-bot run ci [centos-gpu, unix-cpu, unix-gpu]

[mxnet-bot]

Jenkins CI successfully triggered : [unix-cpu, centos-gpu, unix-gpu]

[Neutron3529]

@mxnet-bot run ci [centos-cpu]

[mxnet-bot]

Jenkins CI successfully triggered : [centos-cpu]

[Neutron3529]

@mxnet-bot run ci [centos-gpu,unix-cpu]

seems something wrong with the network connection.

[mxnet-bot]

Jenkins CI successfully triggered : [centos-gpu, unix-cpu]

[Neutron3529]

@mxnet-bot run ci [centos-cpu,unix-cpu,unix-gpu]

[mxnet-bot]

Jenkins CI successfully triggered : [unix-cpu, centos-cpu, unix-gpu]

[Neutron3529]

errors of unix-gpu:

[2020-10-16T12:31:48.968Z] Unpacking libobjc4:amd64 (5.4.0-6ubuntu1~16.04.12) ...

[2020-10-16T12:31:49.892Z] The command '/bin/sh -c /work/ubuntu_clang.sh' returned a non-zero code: 137

[2020-10-16T12:31:49.892Z] 2020-10-16 12:31:48,462 - root - WARNING - Exception: Command '['docker', 'build', '-f', 'docker/Dockerfile.build.ubuntu_gpu_cu101', '--build-arg', 'USER_ID=1001', '--build-arg', 'GROUP_ID=1001', '--cache-from', 'mxnetci/build.ubuntu_gpu_cu101', '-t', 'mxnetci/build.ubuntu_gpu_cu101', 'docker']' returned non-zero exit status 137., Retrying in 1 seconds...

[2020-10-16T12:31:50.921Z] 2020-10-16 12:31:49,464 - root - INFO - Running command: 'docker build -f docker/Dockerfile.build.ubuntu_gpu_cu101 --build-arg USER_ID=1001 --build-arg GROUP_ID=1001 --cache-from mxnetci/build.ubuntu_gpu_cu101 -t mxnetci/build.ubuntu_gpu_cu101 docker'

[2020-10-16T12:31:50.921Z] Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

[2020-10-16T12:31:50.921Z] 2020-10-16 12:31:49,506 - root - WARNING - Exception: Command '['docker', 'build', '-f', 'docker/Dockerfile.build.ubuntu_gpu_cu101', '--build-arg', 'USER_ID=1001', '--build-arg', 'GROUP_ID=1001', '--cache-from', 'mxnetci/build.ubuntu_gpu_cu101', '-t', 'mxnetci/build.ubuntu_gpu_cu101', 'docker']' returned non-zero exit status 1., Retrying in 2 seconds...

[2020-10-16T12:31:52.802Z] 2020-10-16 12:31:51,508 - root - INFO - Running command: 'docker build -f docker/Dockerfile.build.ubuntu_gpu_cu101 --build-arg USER_ID=1001 --build-arg GROUP_ID=1001 --cache-from mxnetci/build.ubuntu_gpu_cu101 -t mxnetci/build.ubuntu_gpu_cu101 docker'

[2020-10-16T12:31:52.802Z] Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

[2020-10-16T12:31:53.056Z] Traceback (most recent call last):

[2020-10-16T12:31:53.056Z]   File "ci/build.py", line 456, in <module>

[2020-10-16T12:31:53.056Z]     sys.exit(main())

[2020-10-16T12:31:53.056Z]   File "ci/build.py", line 366, in main

[2020-10-16T12:31:53.056Z]     cache_intermediate=args.cache_intermediate)

[2020-10-16T12:31:53.056Z]   File "ci/build.py", line 114, in build_docker

[2020-10-16T12:31:53.056Z]     run_cmd()

[2020-10-16T12:31:53.056Z]   File "/home/jenkins_slave/workspace/build-cmake-gpu/ci/util.py", line 84, in f_retry

[2020-10-16T12:31:53.056Z]     return f(*args, **kwargs)

[2020-10-16T12:31:53.056Z]   File "ci/build.py", line 112, in run_cmd

[2020-10-16T12:31:53.056Z]     check_call(cmd)

[2020-10-16T12:31:53.056Z]   File "/usr/lib/python3.6/subprocess.py", line 311, in check_call

[2020-10-16T12:31:53.056Z]     raise CalledProcessError(retcode, cmd)

[2020-10-16T12:31:53.056Z] subprocess.CalledProcessError: Command '['docker', 'build', '-f', 'docker/Dockerfile.build.ubuntu_gpu_cu101', '--build-arg', 'USER_ID=1001', '--build-arg', 'GROUP_ID=1001', '--cache-from', 'mxnetci/build.ubuntu_gpu_cu101', '-t', 'mxnetci/build.ubuntu_gpu_cu101', 'docker']' returned non-zero exit status 1.

script returned exit code 1

errors in unix-cpu

[2020-10-16T12:29:07.672Z] Platform Info:

[2020-10-16T12:29:07.672Z]   OS: Linux (x86_64-pc-linux-gnu)

[2020-10-16T12:29:07.672Z]   CPU: Intel(R) Xeon(R) Platinum 8124M CPU @ 3.00GHz

[2020-10-16T12:29:07.672Z]   WORD_SIZE: 64

[2020-10-16T12:29:07.672Z]   LIBM: libopenlibm

[2020-10-16T12:29:07.672Z]   LLVM: libLLVM-6.0.0 (ORCJIT, skylake)

[2020-10-16T12:29:07.672Z] + install_julia 1.0 1.0.4

[2020-10-16T12:29:07.672Z] ++ echo 1.0

[2020-10-16T12:29:07.672Z] ++ sed 's/\.//'

[2020-10-16T12:29:07.672Z] + local suffix=10

[2020-10-16T12:29:07.672Z] + local JLBINARY=julia-1.0.tar.gz

[2020-10-16T12:29:07.672Z] + local JULIADIR=/work/julia10

[2020-10-16T12:29:07.672Z] + local JULIA=/work/julia10/bin/julia

[2020-10-16T12:29:07.672Z] + mkdir -p /work/julia10

[2020-10-16T12:29:07.672Z] + wget -qO julia-1.0.tar.gz https://julialang-s3.julialang.org/bin/linux/x64/1.0/julia-1.0.4-linux-x86_64.tar.gz

[2020-10-16T12:29:08.230Z] + tar xzf julia-1.0.tar.gz -C /work/julia10 --strip 1

[2020-10-16T12:29:10.736Z] + rm julia-1.0.tar.gz

[2020-10-16T12:29:10.736Z] + /work/julia10/bin/julia -e 'using InteractiveUtils; versioninfo()'

[2020-10-16T12:29:11.659Z] Julia Version 1.0.4

[2020-10-16T12:29:11.659Z] Commit 38e9fb7f80 (2019-05-16 03:38 UTC)

[2020-10-16T12:29:11.659Z] Platform Info:

[2020-10-16T12:29:11.659Z]   OS: Linux (x86_64-pc-linux-gnu)

[2020-10-16T12:29:11.659Z]   CPU: Intel(R) Xeon(R) Platinum 8124M CPU @ 3.00GHz

[2020-10-16T12:29:11.659Z]   WORD_SIZE: 64

[2020-10-16T12:29:11.659Z]   LIBM: libopenlibm

[2020-10-16T12:29:11.659Z]   LLVM: libLLVM-6.0.0 (ORCJIT, skylake)

[2020-10-16T12:29:15.821Z] unexpected EOF

[2020-10-16T12:29:15.821Z] 2020-10-16 12:29:14,098 - root - WARNING - Exception: Command '['docker', 'build', '-f', 'docker/Dockerfile.build.ubuntu_cpu', '--build-arg', 'USER_ID=1001', '--build-arg', 'GROUP_ID=1001', '--cache-from', 'mxnetci/build.ubuntu_cpu', '-t', 'mxnetci/build.ubuntu_cpu', 'docker']' returned non-zero exit status 1., Retrying in 1 seconds...

[2020-10-16T12:29:16.382Z] 2020-10-16 12:29:15,099 - root - INFO - Running command: 'docker build -f docker/Dockerfile.build.ubuntu_cpu --build-arg USER_ID=1001 --build-arg GROUP_ID=1001 --cache-from mxnetci/build.ubuntu_cpu -t mxnetci/build.ubuntu_cpu docker'

[2020-10-16T12:29:16.382Z] time="2020-10-16T12:29:15Z" level=error msg="failed to dial gRPC: cannot connect to the Docker daemon. Is 'docker daemon' running on this host?: dial unix /var/run/docker.sock: connect: connection refused"

[2020-10-16T12:29:16.382Z] error during connect: Post http://%2Fvar%2Frun%2Fdocker.sock/v1.40/build?buildargs=%7B%22GROUP_ID%22%3A%221001%22%2C%22USER_ID%22%3A%221001%22%7D&cachefrom=%5B%22mxnetci%2Fbuild.ubuntu_cpu%22%5D&cgroupparent=&cpuperiod=0&cpuquota=0&cpusetcpus=&cpusetmems=&cpushares=0&dockerfile=Dockerfile.build.ubuntu_cpu&labels=%7B%7D&memory=0&memswap=0&networkmode=default&rm=1&session=qkdrmkwrs29ewyxl09o13yyx5&shmsize=0&t=mxnetci%2Fbuild.ubuntu_cpu&target=&ulimits=null&version=1: context canceled

[2020-10-16T12:29:16.382Z] 2020-10-16 12:29:15,136 - root - WARNING - Exception: Command '['docker', 'build', '-f', 'docker/Dockerfile.build.ubuntu_cpu', '--build-arg', 'USER_ID=1001', '--build-arg', 'GROUP_ID=1001', '--cache-from', 'mxnetci/build.ubuntu_cpu', '-t', 'mxnetci/build.ubuntu_cpu', 'docker']' returned non-zero exit status 1., Retrying in 2 seconds...

[2020-10-16T12:29:18.269Z] 2020-10-16 12:29:17,139 - root - INFO - Running command: 'docker build -f docker/Dockerfile.build.ubuntu_cpu --build-arg USER_ID=1001 --build-arg GROUP_ID=1001 --cache-from mxnetci/build.ubuntu_cpu -t mxnetci/build.ubuntu_cpu docker'

[2020-10-16T12:29:18.269Z] Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

[2020-10-16T12:29:18.269Z] Traceback (most recent call last):

[2020-10-16T12:29:18.269Z]   File "ci/build.py", line 456, in <module>

[2020-10-16T12:29:18.269Z]     sys.exit(main())

[2020-10-16T12:29:18.269Z]   File "ci/build.py", line 366, in main

[2020-10-16T12:29:18.269Z]     cache_intermediate=args.cache_intermediate)

[2020-10-16T12:29:18.269Z]   File "ci/build.py", line 114, in build_docker

[2020-10-16T12:29:18.269Z]     run_cmd()

[2020-10-16T12:29:18.269Z]   File "/home/jenkins_slave/workspace/build-cpu-mkl/ci/util.py", line 84, in f_retry

[2020-10-16T12:29:18.269Z]     return f(*args, **kwargs)

[2020-10-16T12:29:18.269Z]   File "ci/build.py", line 112, in run_cmd

[2020-10-16T12:29:18.269Z]     check_call(cmd)

[2020-10-16T12:29:18.269Z]   File "/usr/lib/python3.6/subprocess.py", line 311, in check_call

[2020-10-16T12:29:18.269Z]     raise CalledProcessError(retcode, cmd)

[2020-10-16T12:29:18.269Z] subprocess.CalledProcessError: Command '['docker', 'build', '-f', 'docker/Dockerfile.build.ubuntu_cpu', '--build-arg', 'USER_ID=1001', '--build-arg', 'GROUP_ID=1001', '--cache-from', 'mxnetci/build.ubuntu_cpu', '-t', 'mxnetci/build.ubuntu_cpu', 'docker']' returned non-zero exit status 1.

script returned exit code 1

errors in centos-cpu

[2020-10-16T12:44:17.737Z] 2020-10-16 12:44:16,429 [Finalizer] [org.apache.mxnet.WarnIfNotDisposed] [WARN] - LEAK: [one-time warning] An instance of org.apache.mxnet.NDArray was not disposed. Set property mxnet.traceLeakedObjects to true to enable tracing

[2020-10-16T12:44:17.737Z] 2020-10-16 12:44:16,430 [Finalizer] [org.apache.mxnet.WarnIfNotDisposed] [WARN] - LEAK: [one-time warning] An instance of org.apache.mxnet.Symbol was not disposed. Set property mxnet.traceLeakedObjects to true to enable tracing

[2020-10-16T12:44:17.737Z] 2020-10-16 12:44:16,430 [Finalizer] [org.apache.mxnet.WarnIfNotDisposed] [WARN] - LEAK: [one-time warning] An instance of org.apache.mxnet.Executor was not disposed. Set property mxnet.traceLeakedObjects to true to enable tracing

[2020-10-16T12:44:17.737Z] 2020-10-16 12:44:16,436 [Finalizer] [org.apache.mxnet.WarnIfNotDisposed] [WARN] - LEAK: [one-time warning] An instance of org.apache.mxnet.io.MXDataIter was not disposed. Set property mxnet.traceLeakedObjects to true to enable tracing

[2020-10-16T12:44:17.737Z] 2020-10-16 12:44:16,437 [Finalizer] [org.apache.mxnet.WarnIfNotDisposed] [WARN] - LEAK: [one-time warning] An instance of org.apache.mxnet.FeedForward was not disposed. Set property mxnet.traceLeakedObjects to true to enable tracing

[2020-10-16T12:44:17.737Z] 2020-10-16 12:44:16,437 [Finalizer] [org.apache.mxnet.WarnIfNotDisposed] [WARN] - LEAK: [one-time warning] An instance of org.apache.mxnet.SparseNDArray was not disposed. Set property mxnet.traceLeakedObjects to true to enable tracing

[2020-10-16T12:44:17.737Z] 2020-10-16 12:44:16,442 [Finalizer] [org.apache.mxnet.WarnIfNotDisposed] [WARN] - LEAK: [one-time warning] An instance of org.apache.mxnet.KVStore was not disposed. Set property mxnet.traceLeakedObjects to true to enable tracing

[2020-10-16T12:44:19.095Z] *** RUN ABORTED ***

[2020-10-16T12:44:19.095Z]   java.lang.Exception: https://s3.amazonaws.com/model-server/inputs/Pug-Cookie.jpg Download failed!

[2020-10-16T12:44:19.095Z]   at org.apache.mxnet.ImageSuite.downloadUrl(ImageSuite.scala:48)

[2020-10-16T12:44:19.095Z]   at org.apache.mxnet.ImageSuite.beforeAll(ImageSuite.scala:54)

[2020-10-16T12:44:19.095Z]   at org.scalatest.BeforeAndAfterAll$class.liftedTree1$1(BeforeAndAfterAll.scala:212)

[2020-10-16T12:44:19.095Z]   at org.scalatest.BeforeAndAfterAll$class.run(BeforeAndAfterAll.scala:210)

[2020-10-16T12:44:19.095Z]   at org.apache.mxnet.ImageSuite.run(ImageSuite.scala:28)

[2020-10-16T12:44:19.095Z]   at org.scalatest.Suite$class.callExecuteOnSuite$1(Suite.scala:1210)

[2020-10-16T12:44:19.095Z]   at org.scalatest.Suite$$anonfun$runNestedSuites$1.apply(Suite.scala:1257)

[2020-10-16T12:44:19.095Z]   at org.scalatest.Suite$$anonfun$runNestedSuites$1.apply(Suite.scala:1255)

[2020-10-16T12:44:19.095Z]   at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)

[2020-10-16T12:44:19.095Z]   at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:186)

[2020-10-16T12:44:19.095Z]   at org.scalatest.Suite$class.runNestedSuites(Suite.scala:1255)

[2020-10-16T12:44:19.095Z]   at org.scalatest.tools.DiscoverySuite.runNestedSuites(DiscoverySuite.scala:30)

[2020-10-16T12:44:19.095Z]   at org.scalatest.Suite$class.run(Suite.scala:1144)

[2020-10-16T12:44:19.095Z]   at org.scalatest.tools.DiscoverySuite.run(DiscoverySuite.scala:30)

[2020-10-16T12:44:19.095Z]   at org.scalatest.tools.SuiteRunner.run(SuiteRunner.scala:45)

[2020-10-16T12:44:19.095Z]   at org.scalatest.tools.Runner$$anonfun$doRunRunRunDaDoRunRun$1.apply(Runner.scala:1340)

[2020-10-16T12:44:19.095Z]   at org.scalatest.tools.Runner$$anonfun$doRunRunRunDaDoRunRun$1.apply(Runner.scala:1334)

[2020-10-16T12:44:19.095Z]   at scala.collection.immutable.List.foreach(List.scala:381)

[2020-10-16T12:44:19.095Z]   at org.scalatest.tools.Runner$.doRunRunRunDaDoRunRun(Runner.scala:1334)

[2020-10-16T12:44:19.095Z]   at org.scalatest.tools.Runner$$anonfun$runOptionallyWithPassFailReporter$2.apply(Runner.scala:1011)

[2020-10-16T12:44:19.095Z]   at org.scalatest.tools.Runner$$anonfun$runOptionallyWithPassFailReporter$2.apply(Runner.scala:1010)

[2020-10-16T12:44:19.095Z]   at org.scalatest.tools.Runner$.withClassLoaderAndDispatchReporter(Runner.scala:1500)

[2020-10-16T12:44:19.095Z]   at org.scalatest.tools.Runner$.runOptionallyWithPassFailReporter(Runner.scala:1010)

[2020-10-16T12:44:19.095Z]   at org.scalatest.tools.Runner$.main(Runner.scala:827)

[2020-10-16T12:44:19.095Z]   at org.scalatest.tools.Runner.main(Runner.scala)

[2020-10-16T12:44:19.095Z] [INFO] ------------------------------------------------------------------------

[2020-10-16T12:44:19.095Z] [INFO] Reactor Summary:

[2020-10-16T12:44:19.095Z] [INFO] 

[2020-10-16T12:44:19.095Z] [INFO] MXNet Scala Package - Parent ....................... SUCCESS [ 14.965 s]

[2020-10-16T12:44:19.095Z] [INFO] MXNet Scala Package - Initializer .................. SUCCESS [  5.813 s]

[2020-10-16T12:44:19.095Z] [INFO] MXNet Scala Package - Initializer Native ........... SUCCESS [  1.168 s]

[2020-10-16T12:44:19.095Z] [INFO] MXNet Scala Package - Macros ....................... SUCCESS [  9.933 s]

[2020-10-16T12:44:19.095Z] [INFO] MXNet Scala Package - Native ....................... SUCCESS [  3.369 s]

[2020-10-16T12:44:19.095Z] [INFO] MXNet Scala Package - Core ......................... FAILURE [ 59.737 s]

[2020-10-16T12:44:19.095Z] [INFO] MXNet Scala Package - Inference .................... SKIPPED

[2020-10-16T12:44:19.095Z] [INFO] MXNet Scala Package - Examples ..................... SKIPPED

[2020-10-16T12:44:19.095Z] [INFO] MXNet Scala Package - Spark ML ..................... SKIPPED

[2020-10-16T12:44:19.095Z] [INFO] Assembly Scala Package ............................. SKIPPED

[2020-10-16T12:44:19.095Z] [INFO] MXNet Scala Package - Full linux-x86_64-only ....... SKIPPED

[2020-10-16T12:44:19.096Z] [INFO] MXNet Scala Package - Full linux-x86_64-only ....... SKIPPED

[2020-10-16T12:44:19.096Z] [INFO] ------------------------------------------------------------------------

[2020-10-16T12:44:19.096Z] [INFO] BUILD FAILURE

[2020-10-16T12:44:19.096Z] [INFO] ------------------------------------------------------------------------

[2020-10-16T12:44:19.096Z] [INFO] Total time: 01:36 min

[2020-10-16T12:44:19.096Z] [INFO] Finished at: 2020-10-16T12:44:17+00:00

[2020-10-16T12:44:19.096Z] [INFO] Final Memory: 42M/2642M

[2020-10-16T12:44:19.096Z] [INFO] ------------------------------------------------------------------------

[2020-10-16T12:44:19.096Z] [ERROR] Failed to execute goal org.scalatest:scalatest-maven-plugin:1.0:test (test) on project mxnet-core: There are test failures -> [Help 1]

[2020-10-16T12:44:19.096Z] [ERROR] 

[2020-10-16T12:44:19.096Z] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.

[2020-10-16T12:44:19.096Z] [ERROR] Re-run Maven using the -X switch to enable full debug logging.

[2020-10-16T12:44:19.096Z] [ERROR] 

[2020-10-16T12:44:19.096Z] [ERROR] For more information about the errors and possible solutions, please read the following articles:

[2020-10-16T12:44:19.096Z] [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

[2020-10-16T12:44:19.096Z] [ERROR] 

[2020-10-16T12:44:19.096Z] [ERROR] After correcting the problems, you can resume the build with the command

[2020-10-16T12:44:19.096Z] [ERROR]   mvn <goals> -rf :mxnet-core

[2020-10-16T12:44:19.350Z] 2020-10-16 12:44:18,039 - root - INFO - Waiting for status of container c6fd018f1c30 for 600 s.

[2020-10-16T12:44:19.604Z] 2020-10-16 12:44:18,268 - root - INFO - Container exit status: {'Error': None, 'StatusCode': 1}

[2020-10-16T12:44:19.604Z] 2020-10-16 12:44:18,268 - root - ERROR - Container exited with an error 😞

[2020-10-16T12:44:19.604Z] 2020-10-16 12:44:18,268 - root - INFO - Executed command for reproduction:

[2020-10-16T12:44:19.604Z] 

[2020-10-16T12:44:19.604Z] ci/build.py --docker-registry mxnetci --platform centos7_cpu --docker-build-retries 3 --shm-size 500m /work/runtime_functions.sh unittest_centos7_cpu_scala

[2020-10-16T12:44:19.604Z] 

[2020-10-16T12:44:19.604Z] 2020-10-16 12:44:18,268 - root - INFO - Stopping container: c6fd018f1c30

[2020-10-16T12:44:19.604Z] 2020-10-16 12:44:18,270 - root - INFO - Removing container: c6fd018f1c30

[2020-10-16T12:44:19.604Z] 2020-10-16 12:44:18,369 - root - CRITICAL - Execution of ['/work/runtime_functions.sh', 'unittest_centos7_cpu_scala'] failed with status: 1

script returned exit code 1

what I could do?
@mxnet-bot run ci [unix-cpu, centos-cpu, unix-gpu]

[mxnet-bot]

Undefined action detected.
Permissible actions are : run ci [all], run ci [job1, job2]
Example : @mxnet-bot run ci [all]
Example : @mxnet-bot run ci [centos-cpu, clang]

[Neutron3529]

@mxnet-bot run ci [unix-cpu, centos-cpu, unix-gpu]

[Neutron3529]

@mxnet-bot run ci [unix-cpu, unix-gpu]

[mxnet-bot]

Jenkins CI successfully triggered : [unix-gpu, unix-cpu]

[Neutron3529]

@mxnet-bot run ci [unix-cpu, unix-gpu]

[mxnet-bot]

Jenkins CI successfully triggered : [unix-cpu, unix-gpu]

[Neutron3529]

@mxnet-bot run ci [unix-cpu, unix-gpu]

[mxnet-bot]

Jenkins CI successfully triggered : [unix-cpu, unix-gpu]

[Neutron3529]

@mxnet-bot run ci [unix-cpu, unix-gpu]

[mxnet-bot]

Jenkins CI successfully triggered : [unix-gpu, unix-cpu]

[szha]

@Neutron3529 thanks for backporting and sorry that it took several tries to get it through the CI. Fortunately, thanks to @josephevans the CI is now stabilized.