You must use Bundler 2 or greater with this lockfile.

[erikwesterberg]

Problem

You must use Bundler 2 or greater with this lockfile.

Background

Somewhere on the line in our work flow, something changed and Semaphore could not longer do his job.

Semaphore started failing on a commit when no configuration was changed.

Screenshots

Add your screenshots here

How did you try to solve the problem?

1. Double checked if we were on right bundle version.
2. Reinstalled bundle.
3. Changed the lockfile.
4. Followed installation suggestion from Semaphore and that fucked up everything.
5. Drop databas and reinstalled everything.

Markdown guide

[kermit-klein]

This happens when you push your Gemfile.lock to your repo,(you will notice that bundle version is 2.x.x at the end of the file)
but semaphore classic is running bundle 1.x.x
do this
run git rm --cached Gemfile.lock on your terminal
then add Gemfile.lock to your .gitignore file.
then git push origin branch_name_here

now if you rebuild the semaphore, it will create its own Gemfile.lock with bundle version 1.x.x
it should run normally.

[maxarvid]

This remains a problem, and the solution we found in my team is to specify in the Semaphore workflow what version of bundler to use. Our Semaphore workflow looks like this, yrmv:

checkout
sem-service start postgres 11
sem-version ruby 2.5.1
curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
chmod +x ./cc-test-reporter
./cc-test-reporter before-build
gem install bundler:2.2.27
bundle update --bundler
bundle install
bundle exec rails db:create db:migrate
bundle exec rspec

The crucial part is to include gem install bundler:2.2.27 which solved the You must use Bundler 2 or greater with this lockfile. error message.