handle dates in tribble

[moodymudskipper]

Closes #480

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[aviator-app]

This pull request failed to merge: PR cannot be automatically rebased, please rebase manually to continue. After you have resolved the problem, you should remove the blocked pull request label from this PR and then try to re-queue the PR. Note that the pull request will be automatically re-queued if it has the mergequeue label.

Additional debug info: Failed to rebase this PR onto the latest changes from the base branch. You will probably need to rebase this PR manually and resolve conflicts).

[aviator-app]

This pull request failed to merge: some required checks failed. After you have resolved the problem, you should remove the blocked pull request label from this PR and then try to re-queue the PR. Note that the pull request will be automatically re-queued if it has the mergequeue label.

Failed checks: Smoke test: stock R