```ruby
set :output, '/home/stillmaintained/shared/log/cron.log'

every 6.hours do
  rake "github:refresh"
end
```

Fix whenever environment variables from RAILS_ENV to RACK_ENV
user
```ruby
job_type :rake,    "cd :path && RACK_ENV=:environment bundle exec rake :task --silent :output"

set :output, '/home/stillmaintained/shared/log/cron.log'

every 6.hours do
  rake "github:refresh"
end
```
assistant