tests/mock: Get along with existing mock /sys/{bus,class} directories
This was fixed in umockdev 0.16.3, but now causes warning messages due to the existing directories. This at least breaks Debian/Ubuntu's autopkgtests.
This currently blocks the umockdev 0.16.3 update in Debian due to the bolt autopkgtest regrssion. I am not actually sure why, as tests/test-integration only sets G_DEBUG=fatal-criticals
, and I don't see a fatal-warnings
there. But maybe that's done in the Debian package itself?