Regenerating platform configurations fails to connection refused errors

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/akeskimo/qt-ci-master/src/platform_configurations.py", line 447, in <module>
configs = builder.get_configurations(integrationRequest, product)
File "/home/akeskimo/qt-ci-master/src/platform_configurations.py", line 283, in get_configurations
configs = platforms_for_project_and_branch(integrationRequest.repositoryState, product, integrationRequest.productVersion)
File "/home/akeskimo/qt-ci-master/src/platform_configurations.py", line 241, in platforms_for_project_and_branch
with application.instance.connectToSourceStorageService() as storage:
File "/home/akeskimo/qt-ci-master/src/application.py", line 319, in connectToSourceStorageService
return typing.cast(RPCContext[sourcestorage.SourceStorage], self.connectToServiceGeneric("SourceStorage"))
File "/home/akeskimo/qt-ci-master/src/application.py", line 303, in connectToServiceGeneric
address = self.getServiceInfo(name)
File "/home/akeskimo/qt-ci-master/src/application.py", line 333, in getServiceInfo
with self.connectToNameService() as nameService:
File "/opt/python-3.5.2/lib/python3.5/contextlib.py", line 59, in _enter_
return next(self.gen)
File "/home/akeskimo/qt-ci-master/env/lib/python3.5/site-packages/thriftpy/rpc.py", line 74, in client_context
transport.open()
File "/home/akeskimo/qt-ci-master/env/lib/python3.5/site-packages/thriftpy/transport/transport.py", line 113, in open
return self.__trans.open()
File "/home/akeskimo/qt-ci-master/env/lib/python3.5/site-packages/thriftpy/transport/socket.py", line 82, in open
message=message)
thriftpy.transport.transport.TTransportException: TTransportException(type=1, message='Could not connect to localhost:48545')
Traceback (most recent call last):
File "/home/akeskimo/qt-ci-master/env/lib/python3.5/site-packages/thriftpy/transport/socket.py", line 74, in open
raise e
File "/home/akeskimo/qt-ci-master/env/lib/python3.5/site-packages/thriftpy/transport/socket.py", line 69, in open
self.handle.connect(res[4])
ConnectionRefusedError: [Errno 111] Connection refused

Reproduce:
1) cherry pick a commit that changes platform instructions
2) terminate any existing coin session
3) run src/test_platformconfigurations.py --generate

Work-around:
./run_ci --tmux-no-attach
src/test_platformconfigurations.py --generate