checker: Remove Load() from test error backend
checker: Remove Load() from test error backend

byo/restic,middelink/restic,byo/restic,kurin/restic,fawick/restic,jayme-github/restic,jayme-github/restic,ar-jan/restic,restic/restic,restic/restic,kurin/restic,stuertz/restic,stuertz/restic,ar-jan/restic,middelink/restic,fawick/restic