Problem Definition

• on-fail : A step that fails using the ignore strategy will not cause the overall pipeline to fail.

• fail-fast : option in Bitbucket Pipelines, which will immediately stop all running parallel steps as soon as any step fails.

The combination of 2 is causing un-expected behaviour in pipeline.

Error :

Fail-fast is not supported with failure strategies other than 'fail'.

Step to re-produce:

pipelines:
  default:
    - parallel:
        fail-fast: true
        steps:
          - step: 
             on-fail:
                strategy: ignore
             script:
                - echo "test"

Run the above pipeline and it will throw the error since combination of on-fail with fast-fail is not supported.

Suggested Solution

• As a temporary workaround do not use the combination of both the strategy.
• Public Blog Reference : https://support.atlassian.com/bitbucket-cloud/docs/step-options/#Fail-fast