Docs publish fails on circleci

[k88hudson]

> [email protected] publish /home/circleci/project/docs
> gh-pages --dist out --dotfiles --message '[skip ci] Docs updates'

To github.com:mozilla/nimbus-shared.git
 ! [remote rejected] gh-pages -> gh-pages (cannot lock ref 'refs/heads/gh-pages': is at 9611f003a4ed9e7b7d29682c87d4760d7d0f7da9 but expected f0830844b508d47a1a904a7315b9dde400432572)
error: failed to push some refs to '[email protected]:mozilla/nimbus-shared.git'

See https://app.circleci.com/pipelines/github/mozilla/nimbus-shared/328/workflows/0d5d687e-2498-470f-ab7a-d0f60e1a3940/jobs/377/steps

[k88hudson]

@mythmon any idea what might be going wrong here?

[mythmon]

Hm. I'm not sure what's up here. I don't really know what could cause lock contention like that. Did you see this more than once? If it just happened once I'd be ok writing it off as "sometimes distributed computing is hard", but if it's persistent...

[mythmon]

This seems to have worked just fine on the last CI run on main:

#!/bin/bash -eo pipefail
# Set up credentials
git config user.email "[email protected]"
git config user.name "ci-build"
cd docs
npm run publish


> [email protected] publish /home/circleci/project/docs
> gh-pages --dist out --dotfiles --message '[skip ci] Docs updates'

Published

CircleCI received exit code 0