Nightly Dotty workflow of 2021-07-03 failed

[github-actions]

See https://github.com/lampepfl/dotty/actions/runs/995476390

[smarter]

The non-bootstrapped tests are failing:

+ diff -rq /tmp/tmp.7fY1EMQs5t scaladoc/output/testcases
Files /tmp/tmp.7fY1EMQs5t/api/_empty_/ToplevelClass.html and scaladoc/output/testcases/api/_empty_/ToplevelClass.html differ

it looks like this broke in #12990 /cc @BarkingBad

[BarkingBad]

I guess the problem is with the command line test which we can see at line 1266 of github action logs, where we have hardcoded versions for source-links and we compare them to the calculated ones from sbt that have changed. I'll look into that one tomorrow morning.