Configuring travis with parallel test - ruby-on-rails

Question

I've been struggling for most of the day to set up travis with parallel_tests, and am unable to understand why it isn't working.
# .travis.yml
language: ruby
rvm:
- 2.2.2
env:
- DB=postgresql
cache: bundler
addons:
postgresql: "9.4"
services:
- postgresql
- redis
script:
- RAILS_ENV=test bundle exec rake teaspoon
- RAILS_ENV=test xvfb-run -a bundle exec rake parallel:spec
before_script:
- "sh -e /etc/init.d/xvfb start"
- cp config/database.travis.yml config/database.yml
- export PARALLEL_TEST_PROCESSORS=4
- RAILS_ENV=development bundle exec rake db:drop
- RAILS_ENV=development bundle exec rake db:create
- RAILS_ENV=development bundle exec rake db:migrate
- bundle exec rake parallel:create
- bundle exec rake parallel:prepare
My database.travis.yml
development:
adapter: postgresql
encoding: utf8
host: localhost
database: adiq_dev
pool: 25
username: postgres
password:
test:
adapter: postgresql
encoding: utf8
host: localhost
database: adiq_test<%= ENV['TEST_ENV_NUMBER'] %>
pool: 25
username: postgres
password:
On parallel prepare, I keep getting this
You have 174 pending migrations:
...
...
Run rake db:migrate to update your database then try again.
The command "bundle exec rake parallel:prepare" failed and exited with 1 during .
The exact chain of commands seems to work fine on my local
I don't get it, where am I going wrong?
Any suggestions will be invaluable....I have spent a lot of hours trying to make this work.

Answer 1

The parallel:load_schema was the trick. Updated file...
# .travis.yml
language: ruby
rvm:
- 2.2.2
env:
- DB=postgresql
cache: bundler
addons:
postgresql: "9.4"
services:
- postgresql
- mongodb
- redis
script:
- RAILS_ENV=test bundle exec rake teaspoon
- RAILS_ENV=test xvfb-run -a bundle exec rake parallel:spec
before_script:
- "sh -e /etc/init.d/xvfb start"
- cp config/database.travis.yml config/database.yml
- cp config/mongoid.travis.yml config/mongoid.yml
- export PARALLEL_TEST_PROCESSORS=4
- RAILS_ENV=development bundle exec rake db:create db:migrate
- bundle exec rake parallel:create parallel:load_schema parallel:prepare