Latest buildbot failures (are random?)

[Mark Wielaard <mark@klomp.org>]

Hi,

So the latest patches all seemed to cause some builder to fail some
testcase. But not always on the same architecture and not always the
same testcase. For the last 12 commits only centos-aarch64 was
completely green.

https://builder.wildebeest.org/buildbot/#/builders?tags=libabigail
https://builder.wildebeest.org/buildbot/#/console

I suspect the "Fold away const for array types" patch. All failures
look like somehow a const <type> is moved around, messing up the type-
ids numbering. Might the re_canonicalization somehow introduce non-
deterministic ordering of the types?

Cheers,

Mark