Test suite failing for mosquitto 1.6.2

[oxr463]

uname -a
Linux mosquitto-devel 5.1.5 #1 SMP Tue May 28 18:46:44 EDT 2019 x86_64 Intel(R) Core(TM) i5-4590 CPU @ 3.30GHz GenuineIntel GNU/Linux

lxc-start --version
3.0.3

python3 -V
Python 3.7.3

make test
# truncated output
./02-subpub-qos1-bad-pubcomp.py
1559786449: mosquitto version 1.6.2 starting
1559786449: Using default config.
1559786449: Opening ipv4 listen socket on port 1888.
1559786449: Opening ipv6 listen socket on port 1888.
1559786449: New connection from ::1 on port 1888.
1559786449: Socket error on client <unknown>, disconnecting.
1559786449: New connection from 127.0.0.1 on port 1888.
1559786449: New client connected from 127.0.0.1 as subpub-qos1-test (p2, c1, k60).
1559786449: No will message specified.
1559786449: Sending CONNACK to subpub-qos1-test (0, 0)
1559786449: Received SUBSCRIBE from subpub-qos1-test
1559786449:     subpub/qos1 (QoS 1)
1559786449: subpub-qos1-test 1 subpub/qos1
1559786449: Sending SUBACK to subpub-qos1-test
1559786449: New connection from 127.0.0.1 on port 1888.
1559786449: New client connected from 127.0.0.1 as helper (p2, c1, k60).
1559786449: No will message specified.
1559786449: Sending CONNACK to helper (0, 0)
1559786449: Received PUBLISH from helper (d0, q1, r0, m1, 'subpub/qos1', ... (7 bytes))
1559786449: Sending PUBACK to helper (m1, rc0)
1559786449: Sending PUBLISH to subpub-qos1-test (d0, q1, r0, m1, 'subpub/qos1', ... (7 bytes))
1559786449: Socket error on client helper, disconnecting.
1559786449: Received PUBCOMP from subpub-qos1-test (Mid: 1, RC:0)
1559786449: Socket error on client subpub-qos1-test, disconnecting.
1559786449: mosquitto version 1.6.2 terminating

Traceback (most recent call last):
  File "./02-subpub-qos1-bad-pubcomp.py", line 49, in <module>
    p = sock.recv(len(pingresp_packet))
ConnectionResetError: [Errno 104] Connection reset by peer

[ralight]

How would I go about reproducing this - the tests work fine for me everywhere I've tried it, so instructions on your environment would be useful.

[oxr463]

I've only tested this on Linux >= 4.19, but then I was also developing in an LXC container, a QEMU virtual machine, and also Docker.

# Creates privileged container in LXC
sudo lxc-create -t download -n mosquitto
Distribution:
# Choose Ubuntu or Debian
Release:
# Choose Bionic or Stretch
Architecture:
# Choose amd64

# Once the setup finishes, you can then run the following command to start the container
sudo lxc-start mosquitto

# Enter the container, runs as root
sudo lxc-attach mosquitto

# Then I installed the dependencies, and fetched the source.
apt update && apt upgrade -y && apt install -y git debhelper libc-ares-dev libssl-dev libwrap0-dev python-all python3-all uthash-dev xsltproc docbook-xsl libcunit1-dev

cd /usr/src
git clone https://github.com/eclipse/mosquitto.git
cd mosquitto

make # compile
make test # run tests

[ralight]

Lovely, thanks. I'll test this out when I can.