I analyzed Hydra's database, and discovered that these "SVD did not converge" test failures on i686 depend only on which machine attempts the build, and are otherwise deterministic.
hydra.gnunet.org fails 100% of the time. It has *never* passed this
test on i686. chapters.gnu.org also fails 100% of the time.
guix.sjd.se consistently passes the test, since at least as far back as
July 2016.
Mark
