We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
cibuildwheel CI tests failing on Azure for windows
`cibuildwheel` CI tests which are using the sample configuration in README are failing on Windows following Azure update to support python 3.8

Given the number of CI providers now tested, I guess we can try to test `cibuildwheel` on python 2.7, 3.5, 3.6, 3.7 and 3.8 without too much overhead on test time by dispatching the python versions running `cibuildwheel` across CI providers.


--- 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 #!/usr/bin/env python
2 # -*- coding: utf-8 -*-
3 
4 try:
5     from setuptools import setup
6 except ImportError:
7     from distutils.core import setup
8 
9 setup(
10     name='cibuildwheel',
11     version='0.12.0',
12     install_requires=['bashlex!=0.13'],
13     description="Build Python wheels on CI with minimal configuration.",
14     long_description='For readme please see http://github.com/joerick/cibuildwheel',
15     author="Joe Rickerby",
16     author_email='joerick@mac.com',
17     url='https://github.com/joerick/cibuildwheel',
18     packages=['cibuildwheel',],
19     license="BSD",
20     zip_safe=False,
21     package_data={
22         'cibuildwheel': ['resources/*'],
23     },
24     keywords='ci wheel packaging pypi travis appveyor macos linux windows',
25     classifiers=[
26         'Intended Audience :: Developers',
27         'Natural Language :: English',
28         'Programming Language :: Python :: 2',
29         'Programming Language :: Python :: 3',
30         'Development Status :: 4 - Beta',
31         'License :: OSI Approved :: BSD License',
32         'Programming Language :: Python :: Implementation :: CPython',
33         'Topic :: Software Development :: Build Tools',
34     ],
35     entry_points={
36         'console_scripts': [
37             'cibuildwheel = cibuildwheel.__main__:main',
38         ],
39     },
40 )
41
```
--- 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()

```

diff --git a/setup.py b/setup.py
--- a/setup.py
+++ b/setup.py
@@ -21,6 +21,8 @@
     package_data={
         'cibuildwheel': ['resources/*'],
     },
+    # Supported python versions
+    python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*',
     keywords='ci wheel packaging pypi travis appveyor macos linux windows',
     classifiers=[
         'Intended Audience :: Developers',

{"golden_diff": "diff --git a/setup.py b/setup.py\n--- a/setup.py\n+++ b/setup.py\n@@ -21,6 +21,8 @@\n     package_data={\n         'cibuildwheel': ['resources/*'],\n     },\n+    # Supported python versions\n+    python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*',\n     keywords='ci wheel packaging pypi travis appveyor macos linux windows',\n     classifiers=[\n         'Intended Audience :: Developers',\n", "issue": "cibuildwheel CI tests failing on Azure for windows\n`cibuildwheel` CI tests which are using the sample configuration in README are failing on Windows following Azure update to support python 3.8\r\n\r\nGiven the number of CI providers now tested, I guess we can try to test `cibuildwheel` on python 2.7, 3.5, 3.6, 3.7 and 3.8 without too much overhead on test time by dispatching the python versions running `cibuildwheel` across CI providers.\r\n\n", "before_files": [{"content": "#!/usr/bin/env python\n# -*- coding: utf-8 -*-\n\ntry:\n    from setuptools import setup\nexcept ImportError:\n    from distutils.core import setup\n\nsetup(\n    name='cibuildwheel',\n    version='0.12.0',\n    install_requires=['bashlex!=0.13'],\n    description=\"Build Python wheels on CI with minimal configuration.\",\n    long_description='For readme please see http://github.com/joerick/cibuildwheel',\n    author=\"Joe Rickerby\",\n    author_email='joerick@mac.com',\n    url='https://github.com/joerick/cibuildwheel',\n    packages=['cibuildwheel',],\n    license=\"BSD\",\n    zip_safe=False,\n    package_data={\n        'cibuildwheel': ['resources/*'],\n    },\n    keywords='ci wheel packaging pypi travis appveyor macos linux windows',\n    classifiers=[\n        'Intended Audience :: Developers',\n        'Natural Language :: English',\n        'Programming Language :: Python :: 2',\n        'Programming Language :: Python :: 3',\n        'Development Status :: 4 - Beta',\n        'License :: OSI Approved :: BSD License',\n        'Programming Language :: Python :: Implementation :: CPython',\n        'Topic :: Software Development :: Build Tools',\n    ],\n    entry_points={\n        'console_scripts': [\n            'cibuildwheel = cibuildwheel.__main__:main',\n        ],\n    },\n)\n", "path": "setup.py"}], "after_files": [{"content": "#!/usr/bin/env python\n# -*- coding: utf-8 -*-\n\ntry:\n    from setuptools import setup\nexcept ImportError:\n    from distutils.core import setup\n\nsetup(\n    name='cibuildwheel',\n    version='0.12.0',\n    install_requires=['bashlex!=0.13'],\n    description=\"Build Python wheels on CI with minimal configuration.\",\n    long_description='For readme please see http://github.com/joerick/cibuildwheel',\n    author=\"Joe Rickerby\",\n    author_email='joerick@mac.com',\n    url='https://github.com/joerick/cibuildwheel',\n    packages=['cibuildwheel',],\n    license=\"BSD\",\n    zip_safe=False,\n    package_data={\n        'cibuildwheel': ['resources/*'],\n    },\n    # Supported python versions\n    python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*',\n    keywords='ci wheel packaging pypi travis appveyor macos linux windows',\n    classifiers=[\n        'Intended Audience :: Developers',\n        'Natural Language :: English',\n        'Programming Language :: Python :: 2',\n        'Programming Language :: Python :: 3',\n        'Development Status :: 4 - Beta',\n        'License :: OSI Approved :: BSD License',\n        'Programming Language :: Python :: Implementation :: CPython',\n        'Topic :: Software Development :: Build Tools',\n    ],\n    entry_points={\n        'console_scripts': [\n            'cibuildwheel = cibuildwheel.__main__:main',\n        ],\n    },\n)\n", "path": "setup.py"}]}