`failed to stat policy file Dockerfile.rego`

[mathieu-benoit]

Contributing guidelines

• I've read the contributing guidelines and wholeheartedly agree

I've found a bug, and:

• The documentation does not mention anything about my problem
• There are no open or closed issues that are related to my problem

Description

Time to time I'm getting this error:

Error: buildx failed with: ERROR: failed to build: failed to stat policy file Dockerfile.rego: failed to load cache key: expected checksum to match 8b828d46ca7dc4a4fe395ff92f843d391ddd3753, got cb62495ec10249da1d6478080ef0a908766b8180

Example here: https://github.com/score-spec/score-compose/actions/runs/24342599657/job/71081196258.

Sometimes, if I re-run the failed-job it will eventually pass successfully, but not always.

Anything I'm missing? My CI definition is here: https://github.com/score-spec/score-compose/blob/main/.github/workflows/ci.yaml#L46-L65.

Expected behaviour

This should not have any error consistently.

Actual behaviour

Getting this error:

Error: buildx failed with: ERROR: failed to build: failed to stat policy file Dockerfile.rego: failed to load cache key: expected checksum to match 8b828d46ca7dc4a4fe395ff92f843d391ddd3753, got cb62495ec10249da1d6478080ef0a908766b8180

Repository URL

https://github.com/score-spec/score-compose

Workflow run URL

https://github.com/score-spec/score-compose/actions/runs/24342599657/job/71081196258

YAML workflow

https://github.com/score-spec/score-compose/blob/main/.github/workflows/ci.yaml#L46-L65

Workflow logs

No response

BuildKit logs

Additional info

No response

[crazy-max]

Yes we had the same issue on BuildKit, this relates to mutable refs on pull request events. We have a fix for this to have the same behavior as actions/checkout: docker/actions-toolkit#1067