Comment 5 for bug 1774780

Also doesn't work with ubuntu 16.04

Unpacking rtl8812au-dkms (4.3.8.12175.20140902+dfsg-0ubuntu2) over (4.3.8.12175.20140902+dfsg-0ubuntu2) ...
Setting up rtl8812au-dkms (4.3.8.12175.20140902+dfsg-0ubuntu2) ...
Loading new rtl8812au-4.3.8.12175.20140902+dfsg DKMS files...
Building only for 4.15.0-32-generic
Building initial module for 4.15.0-32-generic
ERROR: Cannot create report: [Errno 17] File exists: '/var/crash/rtl8812au-dkms.0.crash'
Error! Bad return status for module build on kernel: 4.15.0-32-generic (x86_64)
Consult /var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/make.log for more information.

DKMS make.log for rtl8812au-4.3.8.12175.20140902+dfsg for kernel 4.15.0-32-generic (x86_64)
Sun Aug 19 13:44:45 EDT 2018
make ARCH=x86_64 CROSS_COMPILE= -C /lib/modules/4.15.0-32-generic/build M=/var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build modules
make[1]: Entering directory '/usr/src/linux-headers-4.15.0-32-generic'
Makefile:976: "Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel"
  CC [M] /var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/core/rtw_cmd.o
In file included from /var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/include/osdep_service.h:41:0,
                 from /var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/core/rtw_cmd.c:22:
/var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/include/osdep_service_linux.h: In function ‘_init_timer’:
/var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/include/osdep_service_linux.h:253:8: error: ‘_timer {aka struct timer_list}’ has no member named ‘data’
  ptimer->data = (unsigned long)cntx;
        ^
/var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/include/osdep_service_linux.h:254:2: error: implicit declaration of function ‘init_timer’ [-Werror=implicit-function-declaration]
  init_timer(ptimer);
  ^
In file included from /var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/include/drv_types.h:32:0,
                 from /var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/core/rtw_cmd.c:22:
/var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/include/osdep_service.h: In function ‘thread_enter’:
/var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/include/osdep_service.h:343:2: error: implicit declaration of function ‘allow_signal’ [-Werror=implicit-function-declaration]
  allow_signal(SIGTERM);
  ^
/var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/include/osdep_service.h: In function ‘flush_signals_thread’:
/var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/include/osdep_service.h:353:6: error: implicit declaration of function ‘signal_pending’ [-Werror=implicit-function-declaration]
  if (signal_pending (current))
      ^
/var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/include/osdep_service.h:355:3: error: implicit declaration of function ‘flush_signals’ [-Werror=implicit-function-declaration]
   flush_signals(current);
   ^
cc1: some warnings being treated as errors
scripts/Makefile.build:332: recipe for target '/var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/core/rtw_cmd.o' failed
make[2]: *** [/var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/core/rtw_cmd.o] Error 1
Makefile:1552: recipe for target '_module_/var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build' failed
make[1]: *** [_module_/var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-4.15.0-32-generic'
Makefile:1459: recipe for target 'modules' failed
make: *** [modules] Error 2