We have the following step before running any tests on CI machine:
xcrun simctl shutdown all && xcrun simctl erase all
It was working perfectly before Xcode 26.1. On Beta 3 it was doing it for 15 min every time. When updated to RC1, the tests with cached build are fast (clean goes up to 10 sec), but the package tests clean is still going up to 15 min every time. We did
xcrun simctl runtime dyld_shared_cache update --all
as advised but it's helping only temporarily. Is this going to be fixed in the official release?