job.get_build() may throw an exception

[dd-dino]

I have code that looks like this:

job = japi.build_job(job_name, **params)
while not job.get_build(): # this line throws exception
    time.sleep(1)
build = job.get_build()

and it occasionally throws an exception like this:
Traceback (most recent call last): . . . in run_job while not job.get_build(): File "/opt/scotty/bazel_install/execroot/__main__/bazel-out/k8-fastbuild/bin/middleware_v2/jenkins/replay_trend_branches.runfiles/dd_py_deps_api4jenkins/site-packages/api4jenkins/queue.py", line 55, in get_build self._build = self._new_item( File "/opt/scotty/bazel_install/execroot/__main__/bazel-out/k8-fastbuild/bin/middleware_v2/jenkins/replay_trend_branches.runfiles/dd_py_deps_api4jenkins/site-packages/api4jenkins/item.py", line 67, in _new_item return new_item(self.jenkins, module, item) File "/opt/scotty/bazel_install/execroot/__main__/bazel-out/k8-fastbuild/bin/middleware_v2/jenkins/replay_trend_branches.runfiles/dd_py_deps_api4jenkins/site-packages/api4jenkins/item.py", line 38, in func class_name = delimiter.split(item['_class'])[-1] TypeError: 'NoneType' object is not subscriptable

[joelee2012]

@dd-dino it seems the queue item does not include executable object, is there any zombie queue item ?

[dd-dino]

There is nothing wrong on the Jenkins server side. Perhaps the client is making some assumptions that may not always hold.
I have worked around this issue by wrapping the job.get_build() call in a try / except block in a separate function.