Re: Rump makes the kernel problematically brittle

[Greg Troxel]

The other side of the coin to "rump is fragile" is "an operating system
without rump-style tests that can be run automatically is suscpetible to
hard-to-detect failures from changes, and is therefore fragile".  There
have been many instances (usually on current-users, I think) of reports
of newly-failing tests cases, leading to rapid removal of
newly-introduced defects.