Tests fail due to non-updated code base

Hi,

After force-pushing to my Github repo, the tests started to fail on CircleCI. My tests pass locally and the test errors referred to a chunk of code in one of my factory that does note exist anymore after my last push.
I ssh into the VM and realized that indeed old chunks of code were still present, whereas they have been removed in my latest force-push on my branch.

Is this a cache issue? Is there any way I could resolve this?

Thank you for your answers.

Stack
Rails 4.2
Postgresql
RSpec 3.6.0

UPDATE

I launched a rebuild without cache and it works, problem solved