Comment 6 for bug 1801975

dkms install -m dm-writeboost -v 2.2.8 -k 5.0.0-23-generic

Kernel preparation unnecessary for this kernel. Skipping...

Building module:
cleaning build area...
make -j2 KERNELRELEASE=5.0.0-23-generic all KERNEL_TREE=/lib/modules/5.0.0-23-generic/build V=1...(bad exit status: 2)
ERROR: Cannot create report: [Errno 17] File exists: '/var/crash/dm-writeboost-dkms.0.crash'
Error! Bad return status for module build on kernel: 5.0.0-23-generic (x86_64)
Consult /var/lib/dkms/dm-writeboost/2.2.8/build/make.log for more information.

dpkg -l|grep dm-write
ii dm-writeboost-dkms 2.2.8-1ubuntu3~18.04.2

dkms status dm-writeboost
dm-writeboost, 2.2.8, 4.15.0-55-generic, x86_64: installed
dm-writeboost, 2.2.8, 5.0.0-23-generic, x86_64: installed