Hello Tom,
>> So I'm not very confident that the noise will go away quickly, sorry.
>
> Could you please just shut down the animal until that's dealt with?
Hmmm… Obviously I can.
However, please note that the underlying logic of "a test is failing, 
let's just remove it" does not sound right to me at all:-(
The test is failing because there is a problem, and shuting down the test 
to improve a report does not in any way help to fix it, it just helps to 
hide it.
> It's extremely unpleasant to have to root through a lot of useless
> failures
I do not understand how they are useless. Pg does not work properly with 
current LLVM, and keeps on not working. I think that this information is 
worthy, even if I do not like it and would certainly prefer a quick fix.
> to find the ones that might be of interest.  Right now serinus and 
> seawasp are degrading this report nearly to uselessness:
>
> https://buildfarm.postgresql.org/cgi-bin/show_failures.pl
IMHO, the report should be improved, not the test removed.
If you insist I will shut down the animal, bit I'd prefer not to.
I think that the reminder has value, and just because some report is not 
designed to handle this nicely does not seem like a good reason to do 
that.
-- 
Fabien.