Revert "Revert "switch to using march_hare instead of hot_bunnies""

This reverts commit 7f7017d238bb49610786b8ae3709fd581866407c.
use a fixed thread pool for March Hare

since messages are long lived, we need lots of threads for processing jobs.

“By default MarchHare will rely on the default RabbitMQ Java client’s executor service, which has a fixed size of 5 threads.”

from : http://blog.rubyrabbitmq.info/blog/page/3/
update travis-build
reduce the sleep after a VM error

120 is crazy long
update celluloid
correct a spec
[skip ci] Mention linter in case of YAML error
Merge branch 'master' of github.com:travis-ci/travis-worker
update travis-build

this removes timeouts, the extra logging options, and makes the options for the compile method optional
cleanup compile_script a little
Merge branch 'master' of github.com:travis-ci/travis-worker
update travis-build

fix fix fix
update travis-build
remove the timeouts config for travis-build

it ain’t used, yo