Some concerns were raised to me in private regarding the severity of
such bug reports and whether they should be RC or not.
In case of nbd, it doesn't make a huge difference, it being a key
package and thus not being subjected to autoremovals from testing.
Those repeated build failures/unreliable builds are certainly annoying.
That said, whether I would remove a package from testing for that, I
dunno (probably not).
Wouter, if you prefer to keep this issue as non-RC, I don't mind
personally if the severity is downgraded.
Fwiw, I quickly asked on #debian-release whether it is ok to file such
issues as RC and I got one positive response. But there is certainly
some room for discussion here. I do think it makes a difference, whether
packages fail to build regularly or only rarely, whether they fail to
build on official buildds or more "exotic" build environments.
Regards,
Michael