With commit 74191f391f050af1a56f12d3f198717359a7b89a I fixed the reference data in kcalutils
so all the tests in testincidenceformatter work for me.

but I notice that jenkins isn't happy:
https://build.kde.org/job/Applications%20kcalutils%20kf5-qt5%20SUSEQt5.9/lastBuild/testReport/(root)/TestSuite/kcalutils_testincidenceformatter/

I don't get it.

Am I using  a different grantlee than the jenkins setup?
I have grantlee 5.7.40

can someone else try on their local machines?

-stumped