CircleCI "Build was canceled" - Superseded by a Newer Commit

When auto-cancel of redundant workflows is on, pushing a newer commit to the same branch cancels the in-progress workflow for the older commit. The cancellation is expected behavior, not a failure of your code.

What this error means

A running workflow shows canceled with a note that it was superseded by a newer commit on the same branch.

circleci

Build was canceled. A newer commit on branch feature-x superseded
this workflow (auto-cancel redundant workflows is enabled).

Common causes

Newer push on the same branch

Auto-cancel stops the older in-progress workflow when a newer commit arrives.

Rapid successive pushes

Frequent pushes cancel earlier runs by design.

How to fix it

Re-run the latest commit if needed

The latest commit workflow runs; re-run it if you canceled intentionally.

Confirm the newest commit workflow is the one running.
Re-run the workflow for the latest commit if it was also canceled.
Disable auto-cancel for protected branches if every commit must build.

Adjust auto-cancel scope

Open project settings then Advanced.
Disable auto-cancel for branches where every commit must build.
Leave it enabled for fast-moving feature branches.

How to prevent it

Expect older workflows to cancel when you push again quickly.
Disable auto-cancel on branches that must build every commit.
Watch only the head-commit workflow for status.