Using Foreman with Sidekiq, Neo4j and Ruby on Rails

On a Rails project, I am currently using neo4j instead of ActiveRecord. I added Sidekiq and Foreman to be able to run Sidekiq and the Rails server at the same time. This is what I have in the Procfile:

worker: bundle exec sidekiq
web: rails server

      

        
        
        
      

    

When I go into "start wizard" I get this error:

14:39:29 worker.1 | LockClient[8447] can't wait on resource RWLock[SCHEMA(0), hash=754245282] since => LockClient[8447] <-[:HELD_BY]- RWLock[SCHEMA(0), hash=754245282] <-[:WAITING_FOR]- LockClient[8448] <-[:HELD_BY]- RWLock[SCHEMA(0), hash=754245282]
14:39:29 worker.1 | /home/user/.rvm/gems/ruby-2.1.2/gems/neo4j-core-3.0.8/lib/neo4j-server/cypher_response.rb:163:in `raise_error'
14:39:29 worker.1 | /home/user/.rvm/gems/ruby-2.1.2/gems/neo4j-core-3.0.8/lib/neo4j-server/cypher_session.rb:210:in `_query_or_fail'
14:39:29 worker.1 | /home/user/.rvm/gems/ruby-2.1.2/gems/neo4j-core-3.0.8/lib/neo4j/label.rb:42:in `create_constraint'
... further stack trace

      

        
        
        
      

    

If I don't use Foreman and instead run Sidekiq and Rails in separate tabs, it works fine. Has anyone else had similar problems?