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Please provide as much information as possible. At least, this should include a description of your issue and steps to reproduce the problem. If possible please provide a summary of what steps or workarounds you have already tried, and any docs or articles you found (un)helpful.

Problem you have encountered:

To update the runtime of my app engine app I normally follow this procedure:

1. start Cloud Shell
2. locally edit app.yaml to the new runtime version
3. Run dev_appserver.py to test the change locally
4. Deploy the new version go GAE

This time, running dev_appserver.py app.yaml results in:

cloudshell:~/verb-is (verb-is)$ dev_appserver.py app.yaml 
/usr/lib/google-cloud-sdk/platform/google_appengine/google/protobuf/internal/api_implementation.py:100: UserWarning: Selected implementation upb is not available. Falling back to the python implementation.
  warnings.warn('Selected implementation upb is not available. '
/usr/lib/google-cloud-sdk/platform/google_appengine/google/appengine/api/datastore.py:1307: SyntaxWarning: invalid escape sequence '\s'
  '^\s*([^\s]+)(\s+(%s)\s*)?$' % '|'.join(OPERATORS),
/usr/lib/google-cloud-sdk/platform/google_appengine/google/appengine/_internal/antlr3/recognizers.py:511: SyntaxWarning: invalid escape sequence '\<'
  """
/usr/lib/google-cloud-sdk/platform/google_appengine/lib/webapp2/webapp2/__init__.py:897: SyntaxWarning: invalid escape sequence '\d'
  """Initializes this route.
/usr/lib/google-cloud-sdk/platform/google_appengine/lib/cherrypy/cherrypy/lib/httputil.py:30: SyntaxWarning: invalid escape sequence '\*'
  """Return the given path \*atoms, joined into a single URL.
/usr/lib/google-cloud-sdk/platform/google_appengine/lib/cherrypy/cherrypy/_cpreqbody.py:317: SyntaxWarning: invalid escape sequence '\*'
  """A list of strings, each of which should be a known encoding.
/usr/lib/google-cloud-sdk/platform/google_appengine/lib/cherrypy/cherrypy/_cpreqbody.py:531: SyntaxWarning: invalid escape sequence '\*'
  """A list of strings, each of which should be a known encoding.
/usr/lib/google-cloud-sdk/platform/google_appengine/lib/cherrypy/cherrypy/process/wspbus.py:1: SyntaxWarning: invalid escape sequence '\_'
  """An implementation of the Web Site Process Bus.
/usr/lib/google-cloud-sdk/platform/google_appengine/lib/cherrypy/cherrypy/process/servers.py:1: SyntaxWarning: invalid escape sequence '\ '
  """
/usr/lib/google-cloud-sdk/platform/google_appengine/google/appengine/ext/db/__init__.py:281: SyntaxWarning: invalid escape sequence '\s'
  '^\s*([^\s]+)(\s+(%s)\s*)?$' % '|'.join(_OPERATORS),
/usr/lib/google-cloud-sdk/platform/google_appengine/lib/py3_antlr3/antlr3/recognizers.py:516: SyntaxWarning: invalid escape sequence '\<'
  """
INFO     2024-12-29 11:08:13,451 <string>:235] Using Cloud Datastore Emulator.
We are gradually rolling out the emulator as the default datastore implementation of dev_appserver.
If broken, you can temporarily disable it by --support_datastore_emulator=False
Read the documentation: https://cloud.google.com/appengine/docs/standard/python/tools/migrate-cloud-datastore-emulator
Help us validate that the feature is ready by taking this survey: https://goo.gl/forms/UArIcs8K9CUSCm733
Report issues at: https://issuetracker.google.com/issues/new?component=187272

INFO     2024-12-29 11:08:13,456 <string>:317] Skipping SDK update check.
WARNING  2024-12-29 11:08:13,456 <string>:326] The default encoding of your local Python interpreter is set to 'utf-8' while App Engine's production environment uses 'ascii'; as a result your code may behave differently when deployed.
INFO     2024-12-29 11:08:13,509 <string>:635] SQLite stub data has been renamed to /tmp/appengine.None.rebelveneer/datastore.db.sqlitestub
INFO     2024-12-29 11:08:13,513 datastore_emulator.py:152] Starting Cloud Datastore emulator at: http://localhost:46831
Traceback (most recent call last):
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/dev_appserver.py", line 103, in <module>
    _run_file(__file__, globals())
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/dev_appserver.py", line 99, in _run_file
    _execfile(_PATHS.script_file(script_name), globals_)
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/dev_appserver.py", line 81, in _execfile
    exec(open(fn).read(), scope)
  File "<string>", line 639, in <module>
  File "<string>", line 627, in main
  File "<string>", line 394, in start
  File "<string>", line 746, in create_api_server
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/stub_util.py", line 166, in setup_stubs
    datastore_grpc_stub_class(os.environ['DATASTORE_EMULATOR_HOST']))
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/datastore_grpc_stub.py", line 83, in __init__
    raise RuntimeError('The DatastoreGrpcStub requires a local gRPC '
RuntimeError: The DatastoreGrpcStub requires a local gRPC installation, which is not found.
INFO     2024-12-29 11:08:14,820 datastore_emulator.py:158] Cloud Datastore emulator responded after 1.307037 seconds
INFO     2024-12-29 11:08:14,820 <string>:624] Converting datastore_sqlite_stub data in /tmp/appengine.None.rebelveneer/datastore.db.sqlitestub to Cloud Datastore emulator data in /tmp/appengine.None.rebelveneer/datastore.db.
WARNING  2024-12-29 11:08:14,823 datastore_converter.py:119] Fetched 0 entity from /tmp/appengine.None.rebelveneer/datastore.db.sqlitestub, will not create cloud datastore emulator file
Exception ignored in: <function DatastoreEmulator.__del__ at 0x79af2a7b8040>
Traceback (most recent call last):
  File "/usr/lib/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/cloud_emulators/datastore/datastore_emulator.py", line 207, in __del__
AttributeError: 'NoneType' object has no attribute 'warning'

Rerunning the command using dev_appserver.py --support_datastore_emulator=False app.yaml causes everything to work normally.

What you expected to happen: I expect gcloud changes to be tested and "just work" on Cloud Shell. That's why I use Cloud Shell.

Steps to reproduce: From the error message, I'm guessing the Cloud Datastore Emulator is missing a dependency on Cloud Shell. I guess just try using the emulator on cloud shell.

Other information (workarounds you have tried, documentation consulted, etc):

cloudshell:~/verb-is (verb-is)$ cat /etc/cloud/build.info 
build_name: ubuntu-oci:minimized
serial: 20241011