Virtual Box上のDebian10にGuest Additionがインストールできない

前提・実現したいこと

Vagrant＆Virtual Box上のDebian10にGuest Additionsをインストールしたいです。

インストールしているVirtual Boxのバージョンは6.1.26
ファイル共有のためにはバージョンを合わせないといけないと書いてあったので
Guest Additions 6.1.26をインストールしようと試みています。

エラーに至るまでに行ったこと

・Vagrant Cloud上の空のdebian10（debian/buster64）をVirtualBox内に展開
・apt update & apt upgradeを実行、この時点でlinux-image-4.19.0-18-amd64がインストールされました。
・apt install gcc make perl dkms、この時点でlinux-headers-4.19.0-18-amd64がインストールされました。
・一度debian10を再起動、加えてVirtualBoxに付随してきたVBoxGuestAdditions.isoをdebian10にマウント
・マウントしたisoイメージ内のVBoxLinuxAdditions.runを実行

発生している問題・エラーメッセージ

Verifying archive integrity... All good.
Uncompressing VirtualBox 6.1.26 Guest Additions for Linux........
VirtualBox Guest Additions installer
Copying additional installer modules ...
Installing additional modules ...
VirtualBox Guest Additions: Starting.
VirtualBox Guest Additions: Building the VirtualBox Guest Additions kernel
modules.  This may take a while.
VirtualBox Guest Additions: To build modules for other installed kernels, run
VirtualBox Guest Additions:   /sbin/rcvboxadd quicksetup <version>
VirtualBox Guest Additions: or
VirtualBox Guest Additions:   /sbin/rcvboxadd quicksetup all
VirtualBox Guest Additions: Building the modules for kernel 4.19.0-18-amd64.

VirtualBox Guest Additions: Look at /var/log/vboxadd-setup.log to find out what
went wrong
VirtualBox Guest Additions: Running kernel modules will not be replaced until
the system is restarted

vboxadd-setup.logの中身

Building the main Guest Additions 6.1.26 module for kernel 4.19.0-18-amd64.
Error building the module.  Build output follows.
make V=1 CONFIG_MODULE_SIG= CONFIG_MODULE_SIG_ALL= -C /lib/modules/4.19.0-18-amd64/build M=/tmp/vbox.0 SRCROOT=/tmp/vbox.0 -j2 modules
make[1]: warning: -j2 forced in submake: resetting jobserver mode.
make -C /usr/src/linux-headers-4.19.0-18-amd64 KBUILD_SRC=/usr/src/linux-headers-4.19.0-18-common \
-f /usr/src/linux-headers-4.19.0-18-common/Makefile modules
test -e include/generated/autoconf.h -a -e include/config/auto.conf || (                \
echo >&2;                                                       \
echo >&2 "  ERROR: Kernel configuration is invalid.";           \
echo >&2 "         include/generated/autoconf.h or include/config/auto.conf are missing.";\
echo >&2 "         Run 'make oldconfig && make prepare' on kernel src to fix it.";      \
echo >&2 ;                                                      \
/bin/false)
mkdir -p /tmp/vbox.0/.tmp_versions ; rm -f /tmp/vbox.0/.tmp_versions/*
make -f /usr/src/linux-headers-4.19.0-18-common/scripts/Makefile.build obj=/tmp/vbox.0
(cat /dev/null;   echo kernel//tmp/vbox.0/vboxguest.ko;) > /tmp/vbox.0/modules.order
   gcc-8 -Wp,-MD,/tmp/vbox.0/.VBoxGuest-linux.o.d  -nostdinc -isystem /usr/lib/gcc/x86_64-linux-gnu/8/include -I/usr/src/linux-headers-4.19.0-18-common/arch/x86/include -I./arch/x86/include/generated  -I/usr/src/linux-headers-4.19.0-18-common/include -I./include -I/usr/$
   gcc-8 -Wp,-MD,/tmp/vbox.0/.VBoxGuest.o.d  -nostdinc -isystem /usr/lib/gcc/x86_64-linux-gnu/8/include -I/usr/src/linux-headers-4.19.0-18-common/arch/x86/include -I./arch/x86/include/generated  -I/usr/src/linux-headers-4.19.0-18-common/include -I./include -I/usr/src/li$
   ./tools/objtool/objtool orc generate  --module --no-fp --retpoline "/tmp/vbox.0/.tmp_VBoxGuest-linux.o";
   ./tools/objtool/objtool orc generate  --module --no-fp --retpoline "/tmp/vbox.0/.tmp_VBoxGuest.o";
   gcc-8 -Wp,-MD,/tmp/vbox.0/common/string/.strformatrt.o.d  -nostdinc -isystem /usr/lib/gcc/x86_64-linux-gnu/8/include -I/usr/src/linux-headers-4.19.0-18-common/arch/x86/include -I./arch/x86/include/generated  -I/usr/src/linux-headers-4.19.0-18-common/include -I./inclu$
   gcc-8 -Wp,-MD,/tmp/vbox.0/.combined-agnostic.o.d  -nostdinc -isystem /usr/lib/gcc/x86_64-linux-gnu/8/include -I/usr/src/linux-headers-4.19.0-18-common/arch/x86/include -I./arch/x86/include/generated  -I/usr/src/linux-headers-4.19.0-18-common/include -I./include -I/us$
   ./tools/objtool/objtool orc generate  --module --no-fp --retpoline "/tmp/vbox.0/common/string/.tmp_strformatrt.o";
   gcc-8 -Wp,-MD,/tmp/vbox.0/.combined-os-specific.o.d  -nostdinc -isystem /usr/lib/gcc/x86_64-linux-gnu/8/include -I/usr/src/linux-headers-4.19.0-18-common/arch/x86/include -I./arch/x86/include/generated  -I/usr/src/linux-headers-4.19.0-18-common/include -I./include -I$
   ./tools/objtool/objtool orc generate  --module --no-fp --retpoline "/tmp/vbox.0/.tmp_combined-os-specific.o";
   ./tools/objtool/objtool orc generate  --module --no-fp --retpoline "/tmp/vbox.0/.tmp_combined-agnostic.o";
Killed
make[4]: *** [/usr/src/linux-headers-4.19.0-18-common/scripts/Makefile.build:308: /tmp/vbox.0/combined-agnostic.o] Error 137
make[3]: *** [/usr/src/linux-headers-4.19.0-18-common/Makefile:1561: _module_/tmp/vbox.0] Error 2
make[2]: *** [Makefile:146: sub-make] Error 2
make[1]: *** [Makefile:8: all] Error 2
make: *** [/tmp/vbox.0/Makefile-footer.gmk:117: vboxguest] Error 2
Could not find the X.Org or XFree86 Window System, skipping.