Arch Linux

Description:

After kwin and a series of qt5-* and plasma-* packages are upgraded, plasma-wayland cannot be started.


Additional info:
* package version(s)
```
[2020-06-04T10:31:03+0800] [ALPM] upgraded xkeyboard-config (2.29-1 -> 2.30-1)
[2020-06-04T10:31:04+0800] [ALPM] upgraded qt5-base (5.14.2-3 -> 5.15.0-1)
[2020-06-04T10:31:04+0800] [ALPM] upgraded qt5-x11extras (5.14.2-1 -> 5.15.0-1)
[2020-06-04T10:31:04+0800] [ALPM] upgraded fcitx5-qt (0.0.0.20200528-1 -> 0.0.0.20200603-1)
[2020-06-04T10:31:05+0800] [ALPM] upgraded graphviz (2.44.0-2 -> 2.44.0-3)
[2020-06-04T10:31:05+0800] [ALPM] upgraded harfbuzz-icu (2.6.6-1 -> 2.6.7-1)
[2020-06-04T10:31:05+0800] [ALPM] upgraded kcm-fcitx5 (0.0.0.20200601-1 -> 0.0.0.20200603-1)
[2020-06-04T10:31:05+0800] [ALPM] upgraded qt5-svg (5.14.2-1 -> 5.15.0-1)
[2020-06-04T10:31:06+0800] [ALPM] upgraded qt5-declarative (5.14.2-1 -> 5.15.0-1)
[2020-06-04T10:31:06+0800] [ALPM] upgraded qt5-multimedia (5.14.2-1 -> 5.15.0-1)
[2020-06-04T10:31:06+0800] [ALPM] upgraded qt5-speech (5.14.2-1 -> 5.15.0-1)
[2020-06-04T10:31:06+0800] [ALPM] upgraded libbytesize (2.2-1 -> 2.3-1)
[2020-06-04T10:31:06+0800] [ALPM] upgraded libblockdev (2.23-4 -> 2.24-1)
[2020-06-04T10:31:06+0800] [ALPM] upgraded udisks2 (2.8.4-2 -> 2.9.0-1)
[2020-06-04T10:31:06+0800] [ALPM] upgraded qt5-graphicaleffects (5.14.2-1 -> 5.15.0-1)
[2020-06-04T10:31:06+0800] [ALPM] upgraded qt5-quickcontrols (5.14.2-1 -> 5.15.0-1)
[2020-06-04T10:31:06+0800] [ALPM] upgraded qt5-quickcontrols2 (5.14.2-1 -> 5.15.0-1)
[2020-06-04T10:31:06+0800] [ALPM] upgraded qt5-wayland (5.14.2-1 -> 5.15.0-1)
[2020-06-04T10:31:06+0800] [ALPM] upgraded plasma-framework (5.70.1-1 -> 5.70.1-2)
[2020-06-04T10:31:06+0800] [ALPM] upgraded qt5-sensors (5.14.2-1 -> 5.15.0-1)
[2020-06-04T10:31:06+0800] [ALPM] upgraded qt5-script (5.14.2-1 -> 5.15.0-1)
[2020-06-04T10:31:06+0800] [ALPM] upgraded kwin (5.18.5-1 -> 5.18.5-3)
[2020-06-04T10:31:06+0800] [ALPM] upgraded libnumbertext (1.0.5-2 -> 1.0.6-1)
[2020-06-04T10:31:06+0800] [ALPM] upgraded qqc2-desktop-style (5.70.0-1 -> 5.70.0-2)
[2020-06-04T10:31:06+0800] [ALPM] upgraded plasma-integration (5.18.5-1 -> 5.18.5-2)
[2020-06-04T10:31:06+0800] [ALPM] upgraded portaudio (1:19.6.0-6 -> 1:19.6.0-7)
[2020-06-04T10:31:06+0800] [ALPM] upgraded python-shiboken2 (5.14.2.1-2 -> 5.15.0-1)
[2020-06-04T10:31:06+0800] [ALPM] upgraded pyside2 (5.14.2.1-1 -> 5.15.0-1)
[2020-06-04T10:31:07+0800] [ALPM] upgraded qt5-connectivity (5.14.2-1 -> 5.15.0-1)
[2020-06-04T10:31:07+0800] [ALPM] upgraded qt5-location (5.14.2-2 -> 5.15.0-1)
[2020-06-04T10:31:07+0800] [ALPM] upgraded qt5-tools (5.14.2-2 -> 5.15.0-2)
[2020-06-04T10:31:07+0800] [ALPM] upgraded qt5-webchannel (5.14.2-1 -> 5.15.0-1)
[2020-06-04T10:31:07+0800] [ALPM] upgraded qt5-webengine (5.14.2-3 -> 5.15.0-1)
[2020-06-04T10:31:07+0800] [ALPM] upgraded qt5-webkit (5.212.0alpha4-4 -> 5.212.0alpha4-6)
```
* config and/or log files etc.
```
~ journalctl -b -r | rg kwin_wayland
7月 29 14:15:11 aaa systemd-coredump[1826]: Process 1542 (kwin_wayland) of user 1000 dumped core.
7月 29 14:15:09 aaa audit[1542]: ANOM_ABEND auid=1000 uid=1000 gid=1000 ses=2 pid=1542 comm="kwin_wayland" exe="/usr/bin/kwin_wayland" sig=11 res=1
7月 29 14:15:09 aaa kernel: audit: type=1701 audit(1596003309.602:244): auid=1000 uid=1000 gid=1000 ses=2 pid=1542 comm="kwin_wayland" exe="/usr/bin/kwin_wayland" sig=11 res=1
7月 29 14:15:09 aaa kernel: kwin_wayland[1542]: segfault at 0 ip 00007f44e9cd7ce7 sp 00007ffdc7895308 error 4 in libwayland-server.so.0.1.0[7f44e9cd3000+7000]
```

Steps to reproduce:
1. Upgrade kde and qt
2. Start plasma wayland