Fastlane error message "Could not check if 'fastlane' is up to date."

Here is my circle.yml

machine:
environment:
XCODE_SCHEME: BanditTheCat
xcode:
version: 7.3
dependencies:
pre:
- bundle check --path=vendor/bundle || bundle install --path=vendor/bundle --jobs=4 --retry=3
- bundle exec fastlane init
test:
override:
- bundle exec fastlane ci_build

and here is the error message:

bundle exec fastlane init
ERROR [2016-06-21 15:53:21.42]: Could not check if ‘fastlane’ is up to date.
bundler: failed to load command: fastlane (/Users/distiller/bandit-the-cat-ios-fastlane-example/vendor/bundle/ruby/2.0.0/bin/fastlane)
RuntimeError: Fastlane already set up at path ./fastlane/

It is shown above that fastlane is installed by the gemfile.

I don’t know why I’m getting the error message, have searched the internet and have had no luck.

Any help would be appreciated.

remove bundle exec from calls

This is not correct, according to circle ci support.