Revalidate takes forever

When I click “Update exercise” button on outdated exercise, it tries to revalidate my previous iteration. However, it doesn’t seem to be finished.

Difference of Squares in WebAssembly on Exercism
Binary in MIPS Assembly on Exercism

Jeremy mentioned there’s a large backlog of solutions being processed today.

Yeah, you’re probably at the back of a queue of about 1 million solutions being tested right now - sorry! Our servers are blasting away. We’ve processed 6 million jobs so far today.