Issues when testing manual installation

[siserte]

I am getting errors when testing my flux (v0.51.0) installation.

$ flux start --test-size=4
flux-broker: src/zsock_option.inc:2200: zsock_set_curve_server: Assertion `rc == 0 || zmq_errno () == (156384712 + 53)' failed.
flux-broker: src/zsock_option.inc:2200: zsock_set_curve_server: Assertion `rc == 0 || zmq_errno () == (156384712 + 53)' failed.
flux-start: 0 (pid 119901) Aborted
flux-start: 1 (pid 119902) Aborted
flux-start: 3 (pid 119904) Killed
flux-start: 2 (pid 119903) Killed

Some information about my testbed:

ZMQ version 4.3.4 CZMQ version 4.2.1 GCC 8.4.0

$ cat /etc/os-release
NAME="SLES"
VERSION="12-SP2"
VERSION_ID="12.2"
PRETTY_NAME="SUSE Linux Enterprise Server 12 SP2"
ID="sles"
ANSI_COLOR="0;32"
CPE_NAME="cpe:/o:suse:sles:12:sp2"

$ uname -a
Linux login0 4.4.120-92.70-default #1 SMP Wed Mar 14 15:59:43 UTC 2018 (52a83de) x86_64 x86_64 x86_64 GNU/Linux