rails: All `rails` commands hang on edge Rails

Steps to reproduce

• rails new rails6.1 --database postgresql
• Update gemfile to use edge
• rails app:update
• accept all changes
• hangs on rails active_storage:update

Also hangs on rails server, with no log output, stops here:

=> Booting Puma
=> Rails 6.1.0.alpha application starting in development
=> Run `bin/rails server --help` for more startup options

Expected behavior

Rails commands should run

Actual behavior

They hang

System configuration

Rails version: 6.1.0.alpha

Ruby version: 2.6.0,2.6.5