What pruning errors are ignored?

[playgithub]

The workflows in actions shows:
PKGBUILD: Ignore pruning errors

What pruning errors are ignored?

Does some patches unable to be patched?

Or just some warnings about deprecated things like:

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The following artifacts were uploaded using a version of actions/upload-artifact that is scheduled for deprecation: "127.0.6533.72-6", "build-1", "build-2", "build-3", "build-4". Please update your workflow to use v4 of the artifact actions. Learn more: https://github.blog/changelog/2024-04-16-deprecation-notice-v3-of-the-artifact-actions/