In my environment each time I run a rake task (so far only related to active migration) I get three deprecation warnings and then the process seems to kill.

```
➜  job-board-app git:(styles-for-boards-page) ✗ rake db:drop
/Users/jackburum/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.1/lib/active_support/xml_mini.rb:51: warning: constant ::Fixnum is deprecated
/Users/jackburum/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.1/lib/active_support/xml_mini.rb:52: warning: constant ::Bignum is deprecated
/Users/jackburum/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.1/lib/active_support/core_ext/numeric/conversions.rb:138: warning: constant ::Fixnum is deprecated

```

Same thing happens for reset, migrate, etc. Looking for ideas on what I may need to do in order to get the tasks to run successfully