Bug#978066: pmix: breaks openmpi autopkgtest

[Graham Inggs]

Control: reopen -1

Still failing [1], see e.g.

4.0.5-72021-01-18 01:04:56 UTC   pmix/4.0.0-3   src:pmix from unstable
  1m 46s fail   britney test log (10.4 KB) artifacts (3.18 KB)


[1] https://ci.debian.net/packages/o/openmpi/testing/amd64/