[Nix-dev] Can't call method "jobsetevalinputs" errors from hydra-evaluator

[Peter Simons]

Hi,

hydra.cryp.to suddenly started logging thousands or errors of the
following kind:

    hydra-evaluator[862]: Hydra::Plugin::EmailNotification=HASH(0x716f4c0)->buildFinished: Can't call method "jobsetevalinputs" on an undefined value at /nix/store/cx1j5959svyk2b2965r8c30y1kbslaji-hydra-0.1pre1861-fc16c53/libexec/hydra/lib/Hydra/Helper/CatalystUtils.pm line 264.

Does anyone know what the cause of these errors might be and how to
remedy them?

Best regards,
Peter