Hi, not sure if I can offer you a solution, but I had the same experience the other day and maybe it helps.
I was trying trying to set up lacinia on Datomic Solo, together with hodur and everything that goes with it. Everything was working fine and then after some minor code changes, deploys kept failing. In the end, it was a quirk with enums that threw an exception internally but triggered the timeout in the end and was registered as the error you stated above (“The overall deployment failed because too…”).
To sum it all up - do you have an earlier revision you can try to deploy and see if it succeeds? My guess is that some other part of the code is failing and it ends up being caught as a timeout