SUMMARY Hello! When building kcalendarcore 5.114.0 for Guix, we observe a consistent failure since the beginning of March. Maybe it will work again in April? STEPS TO REPRODUCE 1. Wait after February 29, 2024 2. Run the test suite OBSERVED RESULT Test testdateserialization fails with the following output: ********* Start testing of TestDateSerialization ********* Config: Using QtTest library 5.15.10, Qt 5.15.10 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 11.3.0), unknown unknown PASS : TestDateSerialization::initTestCase() PASS : TestDateSerialization::testNewRecurringTodo() FAIL! : TestDateSerialization::testTodoCompletedOnce() Compared values are not the same Actual (todo->dtStart(false)) : 2024/04/01 00:00:00.000[CEST] Expected (startDate.addMonths(1)): 2024/04/01 01:00:00.000[CEST] Loc: [/tmp/guix-build-kcalendarcore-5.114.0.drv-0/kcalendarcore-5.114.0/autotests/testdateserialization.cpp(79)] PASS : TestDateSerialization::testUTCOffset() PASS : TestDateSerialization::cleanupTestCase() Totals: 4 passed, 1 failed, 0 skipped, 0 blacklisted, 4ms ********* Finished testing of TestDateSerialization ********* EXPECTED RESULT The test should pass. SOFTWARE/OS VERSIONS Windows: N/A macOS: N/A Linux/KDE Plasma: This is a testsuite failure (available in About System) KDE Plasma Version: KDE Frameworks Version: 5.114.0 Qt Version: ADDITIONAL INFORMATION This links shows all build failures occur in March: http://ci.guix.gnu.org/search?query=kcalendarcore It may resume working correctly in April, I don’t know. I am not a regular KDE user, so I hope the provided information is useful to you, but do not hesitate to ask for more precise information. Best regards, Vivien