# apt install aufs-dkms
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
  aufs-tools
Suggested packages:
  aufs-dev
The following NEW packages will be installed:
  aufs-dkms aufs-tools
0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 286 kB of archives.
After this operation, 1,222 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://mirrors.ircam.fr/pub/raspbian/raspbian buster/main armhf aufs-dkms all 4.19+20190211-1 [183 kB]
Get:2 http://mirrors.ircam.fr/pub/raspbian/raspbian buster/main armhf aufs-tools armhf 1:4.14+20190211-1 [103 kB]
Fetched 286 kB in 1s (322 kB/s)
Selecting previously unselected package aufs-dkms.
(Reading database ... 114724 files and directories currently installed.)
Preparing to unpack .../aufs-dkms_4.19+20190211-1_all.deb ...
Unpacking aufs-dkms (4.19+20190211-1) ...
Selecting previously unselected package aufs-tools.
Preparing to unpack .../aufs-tools_1%3a4.14+20190211-1_armhf.deb ...
Unpacking aufs-tools (1:4.14+20190211-1) ...
Setting up aufs-tools (1:4.14+20190211-1) ...
Setting up aufs-dkms (4.19+20190211-1) ...
Loading new aufs-4.19+20190211 DKMS files...
It is likely that 4.19.75-v7+ belongs to a chroot's host
Building for 4.19.93+, 4.19.93-v7+, 4.19.93-v7l+, 4.19.93-v8+, 4.9.0-6-rpi and 4.9.0-6-rpi2
Building initial module for 4.19.93+
Error! Bad return status for module build on kernel: 4.19.93+ (armv7l)
Consult /var/lib/dkms/aufs/4.19+20190211/build/make.log for more information.
dpkg: error processing package aufs-dkms (--configure):
 installed aufs-dkms package post-installation script subprocess returned error exit status 10
Processing triggers for man-db (2.8.5-2) ...
Processing triggers for libc-bin (2.28-10+rpi1) ...
Errors were encountered while processing:
 aufs-dkms
E: Sub-process /usr/bin/dpkg returned an error code (1)