prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  custodian validate failed with latest docker image
  We are using cloudcustodian/c7n:latest, and getting errors below:
  
  > 09:39:41 + custodian validate policy.yaml
  > 09:39:41 Traceback (most recent call last):
  > 09:39:41   File "/usr/local/bin/custodian", line 8, in <module>
  > 09:39:41     sys.exit(main())
  > 09:39:41   File "/usr/local/lib/python3.7/site-packages/c7n/cli.py", line 374, in main
  > 09:39:41     command(config)
  > 09:39:41   File "/usr/local/lib/python3.7/site-packages/c7n/commands.py", line 204, in validate
  > 09:39:41     load_resources()
  > 09:39:41   File "/usr/local/lib/python3.7/site-packages/c7n/resources/__init__.py", line 113, in load_resources
  > 09:39:41     initialize_azure()
  > 09:39:41   File "/usr/local/lib/python3.7/site-packages/c7n_azure/entry.py", line 21, in initialize_azure
  > 09:39:41     import c7n_azure.policy
  > 09:39:41   File "/usr/local/lib/python3.7/site-packages/c7n_azure/policy.py", line 28, in <module>
  > 09:39:41     from c7n_azure.resources.arm import ArmResourceManager
  > 09:39:41   File "/usr/local/lib/python3.7/site-packages/c7n_azure/resources/arm.py", line 24, in <module>
  > 09:39:41     from c7n_azure.query import QueryResourceManager, QueryMeta, ChildResourceManager, TypeInfo, \
  > 09:39:41   File "/usr/local/lib/python3.7/site-packages/c7n_azure/query.py", line 397, in <module>
  > 09:39:41     resources.subscribe(QueryResourceManager.register_actions_and_filters)
  > 09:39:41 TypeError: subscribe() missing 1 required positional argument: 'func'
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `setup.py`
  Content:
  ```
  1 import os
  2 from io import open
  3 from setuptools import setup, find_packages
  4 
  5 
  6 def read(fname):
  7     return open(os.path.join(os.path.dirname(__file__), fname), encoding='utf-8').read()
  8 
  9 
  10 setup(
  11     name="c7n",
  12     use_scm_version={'write_to': 'c7n/version.py', 'fallback_version': '0.9.0-unreleased'},
  13     setup_requires=['setuptools_scm'],
  14     description="Cloud Custodian - Policy Rules Engine",
  15     long_description=read('README.md'),
  16     long_description_content_type='text/markdown',
  17     classifiers=[
  18         'Topic :: System :: Systems Administration',
  19         'Topic :: System :: Distributed Computing',
  20         'License :: OSI Approved :: Apache Software License',
  21         'Programming Language :: Python :: 2.7',
  22         'Programming Language :: Python :: 3.6',
  23         'Programming Language :: Python :: 3.7',
  24         'Programming Language :: Python :: 3.8',
  25     ],
  26     url="https://github.com/cloud-custodian/cloud-custodian",
  27     license="Apache-2.0",
  28     packages=find_packages(),
  29     python_requires=">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3, !=3.4, !=3.5, <4'",
  30     entry_points={
  31         'console_scripts': [
  32             'custodian = c7n.cli:main']},
  33     install_requires=[
  34         "boto3>=1.9.228",
  35         "botocore>=1.13.46",
  36         "python-dateutil>=2.6,<3.0.0",
  37         "PyYAML>=5.1",
  38         "jsonschema",
  39         "jsonpatch>=1.21",
  40         "argcomplete",
  41         "tabulate>=0.8.2",
  42         "urllib3",
  43         "certifi"
  44     ],
  45     extra_requires={
  46         ":python_version<'3.3'": ["backports.functools-lru-cache"]
  47     }
  48 )
  49
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/setup.py b/setup.py
  --- a/setup.py
  +++ b/setup.py
  @@ -9,7 +9,7 @@
   
   setup(
       name="c7n",
  -    use_scm_version={'write_to': 'c7n/version.py', 'fallback_version': '0.9.0-unreleased'},
  +    use_scm_version={'write_to': 'c7n/version.py', 'fallback_version': '0.9.0dev'},
       setup_requires=['setuptools_scm'],
       description="Cloud Custodian - Policy Rules Engine",
       long_description=read('README.md'),
  
verification_info: {"golden_diff": "diff --git a/setup.py b/setup.py\n--- a/setup.py\n+++ b/setup.py\n@@ -9,7 +9,7 @@\n \n setup(\n     name=\"c7n\",\n-    use_scm_version={'write_to': 'c7n/version.py', 'fallback_version': '0.9.0-unreleased'},\n+    use_scm_version={'write_to': 'c7n/version.py', 'fallback_version': '0.9.0dev'},\n     setup_requires=['setuptools_scm'],\n     description=\"Cloud Custodian - Policy Rules Engine\",\n     long_description=read('README.md'),\n", "issue": "custodian validate failed with latest docker image\nWe are using cloudcustodian/c7n:latest, and getting errors below:\r\n\r\n> 09:39:41 + custodian validate policy.yaml\r\n> 09:39:41 Traceback (most recent call last):\r\n> 09:39:41   File \"/usr/local/bin/custodian\", line 8, in <module>\r\n> 09:39:41     sys.exit(main())\r\n> 09:39:41   File \"/usr/local/lib/python3.7/site-packages/c7n/cli.py\", line 374, in main\r\n> 09:39:41     command(config)\r\n> 09:39:41   File \"/usr/local/lib/python3.7/site-packages/c7n/commands.py\", line 204, in validate\r\n> 09:39:41     load_resources()\r\n> 09:39:41   File \"/usr/local/lib/python3.7/site-packages/c7n/resources/__init__.py\", line 113, in load_resources\r\n> 09:39:41     initialize_azure()\r\n> 09:39:41   File \"/usr/local/lib/python3.7/site-packages/c7n_azure/entry.py\", line 21, in initialize_azure\r\n> 09:39:41     import c7n_azure.policy\r\n> 09:39:41   File \"/usr/local/lib/python3.7/site-packages/c7n_azure/policy.py\", line 28, in <module>\r\n> 09:39:41     from c7n_azure.resources.arm import ArmResourceManager\r\n> 09:39:41   File \"/usr/local/lib/python3.7/site-packages/c7n_azure/resources/arm.py\", line 24, in <module>\r\n> 09:39:41     from c7n_azure.query import QueryResourceManager, QueryMeta, ChildResourceManager, TypeInfo, \\\r\n> 09:39:41   File \"/usr/local/lib/python3.7/site-packages/c7n_azure/query.py\", line 397, in <module>\r\n> 09:39:41     resources.subscribe(QueryResourceManager.register_actions_and_filters)\r\n> 09:39:41 TypeError: subscribe() missing 1 required positional argument: 'func'\n", "before_files": [{"content": "import os\nfrom io import open\nfrom setuptools import setup, find_packages\n\n\ndef read(fname):\n    return open(os.path.join(os.path.dirname(__file__), fname), encoding='utf-8').read()\n\n\nsetup(\n    name=\"c7n\",\n    use_scm_version={'write_to': 'c7n/version.py', 'fallback_version': '0.9.0-unreleased'},\n    setup_requires=['setuptools_scm'],\n    description=\"Cloud Custodian - Policy Rules Engine\",\n    long_description=read('README.md'),\n    long_description_content_type='text/markdown',\n    classifiers=[\n        'Topic :: System :: Systems Administration',\n        'Topic :: System :: Distributed Computing',\n        'License :: OSI Approved :: Apache Software License',\n        'Programming Language :: Python :: 2.7',\n        'Programming Language :: Python :: 3.6',\n        'Programming Language :: Python :: 3.7',\n        'Programming Language :: Python :: 3.8',\n    ],\n    url=\"https://github.com/cloud-custodian/cloud-custodian\",\n    license=\"Apache-2.0\",\n    packages=find_packages(),\n    python_requires=\">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3, !=3.4, !=3.5, <4'\",\n    entry_points={\n        'console_scripts': [\n            'custodian = c7n.cli:main']},\n    install_requires=[\n        \"boto3>=1.9.228\",\n        \"botocore>=1.13.46\",\n        \"python-dateutil>=2.6,<3.0.0\",\n        \"PyYAML>=5.1\",\n        \"jsonschema\",\n        \"jsonpatch>=1.21\",\n        \"argcomplete\",\n        \"tabulate>=0.8.2\",\n        \"urllib3\",\n        \"certifi\"\n    ],\n    extra_requires={\n        \":python_version<'3.3'\": [\"backports.functools-lru-cache\"]\n    }\n)\n", "path": "setup.py"}], "after_files": [{"content": "import os\nfrom io import open\nfrom setuptools import setup, find_packages\n\n\ndef read(fname):\n    return open(os.path.join(os.path.dirname(__file__), fname), encoding='utf-8').read()\n\n\nsetup(\n    name=\"c7n\",\n    use_scm_version={'write_to': 'c7n/version.py', 'fallback_version': '0.9.0dev'},\n    setup_requires=['setuptools_scm'],\n    description=\"Cloud Custodian - Policy Rules Engine\",\n    long_description=read('README.md'),\n    long_description_content_type='text/markdown',\n    classifiers=[\n        'Topic :: System :: Systems Administration',\n        'Topic :: System :: Distributed Computing',\n        'License :: OSI Approved :: Apache Software License',\n        'Programming Language :: Python :: 2.7',\n        'Programming Language :: Python :: 3.6',\n        'Programming Language :: Python :: 3.7',\n        'Programming Language :: Python :: 3.8',\n    ],\n    url=\"https://github.com/cloud-custodian/cloud-custodian\",\n    license=\"Apache-2.0\",\n    packages=find_packages(),\n    python_requires=\">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3, !=3.4, !=3.5, <4'\",\n    entry_points={\n        'console_scripts': [\n            'custodian = c7n.cli:main']},\n    install_requires=[\n        \"boto3>=1.9.228\",\n        \"botocore>=1.13.46\",\n        \"python-dateutil>=2.6,<3.0.0\",\n        \"PyYAML>=5.1\",\n        \"jsonschema\",\n        \"jsonpatch>=1.21\",\n        \"argcomplete\",\n        \"tabulate>=0.8.2\",\n        \"urllib3\",\n        \"certifi\"\n    ],\n    extra_requires={\n        \":python_version<'3.3'\": [\"backports.functools-lru-cache\"]\n    }\n)\n", "path": "setup.py"}]}