https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/ Issue: sci-libs/umfpack fails tests. Discovered on: amd64
Created attachment 648210 [details] build.log build log and emerge --info
Created attachment 648212 [details] other.tar.bz2 other logs
That's a weird error. But there could be some library mismatch.
ci has reproduced this issue with version 5.7.9 - Updating summary.