Sigh.

[...]
FAIL: integrityhuge
==================================
7 of 9 tests failed
Please report to wouter@debian.org
==================================

Obviously, this new code is somewhat broken.

Hack hack, debug debug, oh, oops, there's still an nbd-server running, so bind fails, which is why the test suite fails. Maybe that's just it?

... yes, if I kill that other nbd-server, this test suite seems to work. Looks like I'm a better coder than I thought!

[...]
FAIL: integrityhuge
==================================
6 of 9 tests failed
Please report to wouter@debian.org
==================================

... except I'm not, I'm just very good (or very bad, depening on your point of view) in picking test suites to debug. Hrmpf.