Simon Quigley and I are currently working on Qt 5.9 transition in a PPA .
We noticed that some of the Qt packages hang when their tests are run on
s390x. This does not happen on other architectures, and this does not happen
on Debian s390x buildds (and I cannot reproduce it on zelenka.debian.org).
Examples of hanging builds:
The last one is still running, however the build log indicates that it hanged
*after* the tests have finished, so it should not be a bug in Qt code.
Has anybody else seen such issues? If no, maybe some buildd admin can
investigate what happens there?