Giving an unknown version number appears to work before it errors

[caius]

Raises a NameError trying to find Ania::MigrationMismatch, after outputting lines that appear to be it working successfully.

We should fix the NameError at least, but I wonder if we can also check for the migration of that version before we output anything.

Otho:freeagent(use-ania)[2] caius$ ber db:check_migration VERSION=abcde --trace
** Invoke db:check_migration (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute db:check_migration
Migrating to the latest version
Running Rails down migration
Migrating to the latest version
rake aborted!
NameError: uninitialized constant Ania::MigrationMismatch
/Users/caius/.gem/ruby/2.1.8/bundler/gems/ania-a82642d0b868/lib/tasks/check_migration.rake:9:in `rescue in block (2 levels) in <top (required)>'
/Users/caius/.gem/ruby/2.1.8/bundler/gems/ania-a82642d0b868/lib/tasks/check_migration.rake:3:in `block (2 levels) in <top (required)>'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/task.rb:248:in `call'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/task.rb:248:in `block in execute'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/task.rb:243:in `each'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/task.rb:243:in `execute'
/Users/caius/freeagent/src/freeagent/lib/tasks/patches.rake:14:in `block in execute'
/Users/caius/freeagent/src/freeagent/lib/tasks/patches.rake:33:in `block in add_rails_tag'
/Users/caius/.gem/ruby/2.1.8/gems/activesupport-4.2.6/lib/active_support/tagged_logging.rb:68:in `block in tagged'
/Users/caius/.gem/ruby/2.1.8/gems/activesupport-4.2.6/lib/active_support/tagged_logging.rb:26:in `tagged'
/Users/caius/.gem/ruby/2.1.8/gems/activesupport-4.2.6/lib/active_support/tagged_logging.rb:68:in `tagged'
/Users/caius/freeagent/src/freeagent/lib/tasks/patches.rake:28:in `add_rails_tag'
/Users/caius/freeagent/src/freeagent/lib/tasks/patches.rake:14:in `execute'
/Users/caius/freeagent/src/freeagent/lib/tasks/patches.rake:50:in `block in execute'
/Users/caius/freeagent/src/freeagent/app/freeagent/app_metrics.rb:89:in `block in time'
/Users/caius/.rubies/ruby-2.1.8/lib/ruby/2.1.0/benchmark.rb:294:in `realtime'
/Users/caius/freeagent/src/freeagent/app/freeagent/app_metrics.rb:89:in `time'
/Users/caius/freeagent/src/freeagent/lib/tasks/patches.rake:50:in `execute'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/task.rb:187:in `block in invoke_with_call_chain'
/Users/caius/.rubies/ruby-2.1.8/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/task.rb:180:in `invoke_with_call_chain'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/task.rb:173:in `invoke'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/application.rb:150:in `invoke_task'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/application.rb:106:in `block (2 levels) in top_level'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/application.rb:106:in `each'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/application.rb:106:in `block in top_level'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/application.rb:115:in `run_with_threads'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/application.rb:100:in `top_level'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/application.rb:78:in `block in run'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/application.rb:176:in `standard_exception_handling'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/application.rb:75:in `run'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/bin/rake:33:in `<top (required)>'
/Users/caius/.gem/ruby/2.1.8/bin/rake:22:in `load'
/Users/caius/.gem/ruby/2.1.8/bin/rake:22:in `<main>'
ActiveRecord::UnknownMigrationVersionError: 

No migration with version number 0

/Users/caius/.gem/ruby/2.1.8/gems/activerecord-4.2.6/lib/active_record/migration.rb:939:in `run'
/Users/caius/.gem/ruby/2.1.8/gems/activerecord-4.2.6/lib/active_record/migration.rb:834:in `run'
/Users/caius/.gem/ruby/2.1.8/bundler/gems/ania-a82642d0b868/lib/ania/checker.rb:80:in `run_rails_down_migration'
/Users/caius/.gem/ruby/2.1.8/bundler/gems/ania-a82642d0b868/lib/ania/checker.rb:21:in `check!'
/Users/caius/.gem/ruby/2.1.8/bundler/gems/ania-a82642d0b868/lib/tasks/check_migration.rake:6:in `block (2 levels) in <top (required)>'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/task.rb:248:in `call'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/task.rb:248:in `block in execute'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/task.rb:243:in `each'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/task.rb:243:in `execute'
/Users/caius/freeagent/src/freeagent/lib/tasks/patches.rake:14:in `block in execute'
/Users/caius/freeagent/src/freeagent/lib/tasks/patches.rake:33:in `block in add_rails_tag'
/Users/caius/.gem/ruby/2.1.8/gems/activesupport-4.2.6/lib/active_support/tagged_logging.rb:68:in `block in tagged'
/Users/caius/.gem/ruby/2.1.8/gems/activesupport-4.2.6/lib/active_support/tagged_logging.rb:26:in `tagged'
/Users/caius/.gem/ruby/2.1.8/gems/activesupport-4.2.6/lib/active_support/tagged_logging.rb:68:in `tagged'
/Users/caius/freeagent/src/freeagent/lib/tasks/patches.rake:28:in `add_rails_tag'
/Users/caius/freeagent/src/freeagent/lib/tasks/patches.rake:14:in `execute'
/Users/caius/freeagent/src/freeagent/lib/tasks/patches.rake:50:in `block in execute'
/Users/caius/freeagent/src/freeagent/app/freeagent/app_metrics.rb:89:in `block in time'
/Users/caius/.rubies/ruby-2.1.8/lib/ruby/2.1.0/benchmark.rb:294:in `realtime'
/Users/caius/freeagent/src/freeagent/app/freeagent/app_metrics.rb:89:in `time'
/Users/caius/freeagent/src/freeagent/lib/tasks/patches.rake:50:in `execute'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/task.rb:187:in `block in invoke_with_call_chain'
/Users/caius/.rubies/ruby-2.1.8/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/task.rb:180:in `invoke_with_call_chain'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/task.rb:173:in `invoke'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/application.rb:150:in `invoke_task'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/application.rb:106:in `block (2 levels) in top_level'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/application.rb:106:in `each'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/application.rb:106:in `block in top_level'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/application.rb:115:in `run_with_threads'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/application.rb:100:in `top_level'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/application.rb:78:in `block in run'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/application.rb:176:in `standard_exception_handling'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/lib/rake/application.rb:75:in `run'
/Users/caius/.gem/ruby/2.1.8/gems/rake-11.1.2/bin/rake:33:in `<top (required)>'
/Users/caius/.gem/ruby/2.1.8/bin/rake:22:in `load'
/Users/caius/.gem/ruby/2.1.8/bin/rake:22:in `<main>'
Tasks: TOP => db:check_migration
  7.99s user 3.01s system 90% cpu 12.102 total