The coverage robot is broken.

[doug-q]

Looking at Commits and Pulls on https://app.codecov.io/github/CQCL/hugr-llvm one sees that for a few days the robot has been unable to recognise base commits.

Coverage jobs are succeeding, see for example https://github.com/CQCL/hugr-llvm/actions/runs/9612976251/job/26514775808?pr=38

[cqc-alec]

I don't know why this should cause it, but from #31 :

[doug-q]

That makes sense, see https://docs.codecov.com/docs/error-reference. Hypothesis: It get's confused when base commit changes, no it's confused because the previous commit doesn't have coverage. Cool.