test-returning-errno-lwt-preemptive fails in Tumbleweed, works in Leap

[olafhering]

make check with commit bef7d50 fails in Tumbleweed, likely caused by newer toolchain/glibc. Full build logs attached.

Leap.log.txt.gz
Factory.log.txt.gz

[  664s] Command [928] exited with code 1:
[  664s] $ (cd _build/default/tests/test-returning-errno-lwt-preemptive && ./test_returning_errno.exe)
[  664s] ...~
[  664s] ==============================================================================
[  664s] Error: Errno tests:0:calling stat.
[  664s] 
[  664s] File "/home/abuild/rpmbuild/BUILD/ocaml-ctypes-0.18.0/_build/default/tests/test-returning-errno-lwt-preemptive/oUnit-Errno tests
-sheep56#00.log", line 11979, characters 1-1:
[  664s] Error: Errno tests:0:calling stat (in the log).
[  664s] 
[  664s] Timeout after 600.0s
[  664s] ------------------------------------------------------------------------------

[olafhering]

Hmm, so #588 is biting again, hopefully it makes no difference. The used source is avsm/ocaml-ctypes@bef7d50

[olafhering]

However, looking at ocaml-ctypes:testsuite, the failures are apparently not specific to Tumbleweed...