```ruby
rake aborted!
/home/me/.rvm/gems/ruby-1.9.3-p392/gems/rake-10.0.4/lib/rake/trace_output.rb:16:in `block in trace_on': invalid byte sequence in US-ASCII (ArgumentError)
```

If you got this error

checkout your `your custom initializers, your database.yml, etc`

add
```
#encoding: utf-8
```