Description of problem:

During Dry-Run validation of Task References, some retryable errors (such as Resource Quota evaluation timeouts) are not handled correctly and cause the PipelineRun to fail with an error like:

Pipeline my-pipelinerun can't be Run; it contains Tasks that don't exist: Couldn't retrieve Task "resolver type bundles\nname = build-image\n": retryable error validating referenced object build-image: Internal error occurred: resource quota evaluation timed out 

This is because even when the getTask function returns a retryable error (indicated by the error snippet "retryable error validating referenced object"), the handling is done by IsErrTransient which uses the kubeapi when checking for timeout errors. The error message's snippet "Internal error occurred: " indicates that the kubeAPI did not return a timeout error but a server error, so IsErrTransient returns false.

Checking if getTask returned an ErrCouldntValidateObjectRetryable should resolve the issue

Workaround

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