2021-07-09T21:47:30,137 Created temporary directory: /tmp/pip-ephem-wheel-cache-nifmcrq8
2021-07-09T21:47:30,140 Created temporary directory: /tmp/pip-req-tracker-8m4z566p
2021-07-09T21:47:30,140 Initialized build tracking at /tmp/pip-req-tracker-8m4z566p
2021-07-09T21:47:30,140 Created build tracker: /tmp/pip-req-tracker-8m4z566p
2021-07-09T21:47:30,140 Entered build tracker: /tmp/pip-req-tracker-8m4z566p
2021-07-09T21:47:30,141 Created temporary directory: /tmp/pip-wheel-ck3pc7_b
2021-07-09T21:47:30,175 1 location(s) to search for versions of mailman-bundler:
2021-07-09T21:47:30,175 * https://pypi.org/simple/mailman-bundler/
2021-07-09T21:47:30,176 Fetching project page and analyzing links: https://pypi.org/simple/mailman-bundler/
2021-07-09T21:47:30,176 Getting page https://pypi.org/simple/mailman-bundler/
2021-07-09T21:47:30,178 Found index url https://pypi.org/simple
2021-07-09T21:47:30,358 Skipping link: not a file: https://pypi.org/simple/mailman-bundler/
2021-07-09T21:47:30,374 Given no hashes to check 0 links for project 'mailman-bundler': discarding no candidates
2021-07-09T21:47:30,374 ERROR: Could not find a version that satisfies the requirement mailman-bundler==3.0b1 (from versions: none)
2021-07-09T21:47:30,375 ERROR: No matching distribution found for mailman-bundler==3.0b1
2021-07-09T21:47:30,375 Exception information:
2021-07-09T21:47:30,375 Traceback (most recent call last):
2021-07-09T21:47:30,375   File "/usr/local/lib/python3.9/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 341, in resolve
2021-07-09T21:47:30,375     name, crit = self._merge_into_criterion(r, parent=None)
2021-07-09T21:47:30,375   File "/usr/local/lib/python3.9/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 173, in _merge_into_criterion
2021-07-09T21:47:30,375     raise RequirementsConflicted(criterion)
2021-07-09T21:47:30,375 pip._vendor.resolvelib.resolvers.RequirementsConflicted: Requirements conflict: SpecifierRequirement('mailman-bundler==3.0b1')
2021-07-09T21:47:30,375 
2021-07-09T21:47:30,375 During handling of the above exception, another exception occurred:
2021-07-09T21:47:30,375 
2021-07-09T21:47:30,375 Traceback (most recent call last):
2021-07-09T21:47:30,375   File "/usr/local/lib/python3.9/dist-packages/pip/_internal/resolution/resolvelib/resolver.py", line 127, in resolve
2021-07-09T21:47:30,375     result = self._result = resolver.resolve(
2021-07-09T21:47:30,375   File "/usr/local/lib/python3.9/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 473, in resolve
2021-07-09T21:47:30,375     state = resolution.resolve(requirements, max_rounds=max_rounds)
2021-07-09T21:47:30,375   File "/usr/local/lib/python3.9/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 343, in resolve
2021-07-09T21:47:30,375     raise ResolutionImpossible(e.criterion.information)
2021-07-09T21:47:30,375 pip._vendor.resolvelib.resolvers.ResolutionImpossible: [RequirementInformation(requirement=SpecifierRequirement('mailman-bundler==3.0b1'), parent=None)]
2021-07-09T21:47:30,375 
2021-07-09T21:47:30,375 The above exception was the direct cause of the following exception:
2021-07-09T21:47:30,375 
2021-07-09T21:47:30,375 Traceback (most recent call last):
2021-07-09T21:47:30,375   File "/usr/local/lib/python3.9/dist-packages/pip/_internal/cli/base_command.py", line 180, in _main
2021-07-09T21:47:30,375     status = self.run(options, args)
2021-07-09T21:47:30,375   File "/usr/local/lib/python3.9/dist-packages/pip/_internal/cli/req_command.py", line 205, in wrapper
2021-07-09T21:47:30,375     return func(self, options, args)
2021-07-09T21:47:30,375   File "/usr/local/lib/python3.9/dist-packages/pip/_internal/commands/wheel.py", line 142, in run
2021-07-09T21:47:30,375     requirement_set = resolver.resolve(
2021-07-09T21:47:30,375   File "/usr/local/lib/python3.9/dist-packages/pip/_internal/resolution/resolvelib/resolver.py", line 136, in resolve
2021-07-09T21:47:30,375     raise error from e
2021-07-09T21:47:30,375 pip._internal.exceptions.DistributionNotFound: No matching distribution found for mailman-bundler==3.0b1
2021-07-09T21:47:30,379 Removed build tracker: '/tmp/pip-req-tracker-8m4z566p'