Random failed tests

$ bundle exec ruby -Itest test/resource_test.rb


 9) Failure:
TestGRPC#test_circuit_breaker_on_client_streamer_return_op [/workspace/test/adapters/grpc_test.rb:215]:
[GRPC::DeadlineExceeded] exception expected, not
Class: <GRPC::Unavailable>
Message: <"[0.0.0.1:0] 14:failed to connect to all addresses. debug_error_string:{\"created\":\"@1662745388.698313140\",\"description\":\"Failed to pick subchannel\",\"file\":\"src/core/ext/filters/client_channel/client_channel.cc\",\"file_line\":3217,\"referenced_errors\":[{\"created\":\"@1662745388.698293641\",\"description\":\"failed to connect to all addresses\",\"file\":\"src/core/lib/transport/error_utils.cc\",\"file_line\":165,\"grpc_status\":14}]}">
---Backtrace---
/usr/local/bundle/gems/grpc-1.46.3/src/ruby/lib/grpc/generic/active_call.rb:29:in `check_status'
/usr/local/bundle/gems/grpc-1.46.3/src/ruby/lib/grpc/generic/active_call.rb:186:in `attach_status_results_and_complete_call'
/usr/local/bundle/gems/grpc-1.46.3/src/ruby/lib/grpc/generic/active_call.rb:175:in `receive_and_check_status'
/usr/local/bundle/gems/grpc-1.46.3/src/ruby/lib/grpc/generic/active_call.rb:404:in `rescue in client_streamer'
/usr/local/bundle/gems/grpc-1.46.3/src/ruby/lib/grpc/generic/active_call.rb:403:in `client_streamer'
/usr/local/bundle/gems/grpc-1.46.3/src/ruby/lib/grpc/generic/client_stub.rb:251:in `block (2 levels) in client_streamer'
/usr/local/bundle/gems/grpc-1.46.3/src/ruby/lib/grpc/generic/interceptors.rb:170:in `intercept!'
/usr/local/bundle/gems/grpc-1.46.3/src/ruby/lib/grpc/generic/client_stub.rb:250:in `block in client_streamer'
/workspace/lib/semian/grpc.rb:120:in `call'
/workspace/lib/semian/grpc.rb:120:in `block (2 levels) in handle_operation'
/workspace/lib/semian/adapter.rb:74:in `mark_resource_as_acquired'
/workspace/lib/semian/adapter.rb:38:in `block in acquire_semian_resource'
/workspace/lib/semian/protected_resource.rb:30:in `block (2 levels) in acquire'
/workspace/lib/semian/protected_resource.rb:59:in `block in acquire_bulkhead'
/workspace/lib/semian/protected_resource.rb:58:in `acquire'
/workspace/lib/semian/protected_resource.rb:58:in `acquire_bulkhead'
/workspace/lib/semian/protected_resource.rb:28:in `block in acquire'
/workspace/lib/semian/protected_resource.rb:46:in `block in acquire_circuit_breaker'
/workspace/lib/semian/circuit_breaker.rb:168:in `maybe_with_half_open_resource_timeout'
/workspace/lib/semian/circuit_breaker.rb:39:in `acquire'
/workspace/lib/semian/protected_resource.rb:45:in `acquire_circuit_breaker'
/workspace/lib/semian/protected_resource.rb:27:in `acquire'
/workspace/lib/semian/adapter.rb:37:in `acquire_semian_resource'
/workspace/lib/semian/grpc.rb:120:in `block in handle_operation'
/workspace/test/adapters/grpc_test.rb:216:in `block (2 levels) in open_circuit!'

Start by running bundle exec ruby -Itest test/resource_test.rb, then inspect test/adapters/grpc_test.rb:215-216 and the Semian call path in lib/semian/grpc.rb. Reproduce the intermittent failure and determine why the test receives GRPC::Unavailable instead of GRPC::DeadlineExceeded; done means the test reliably passes with the intended exception.