/tmp/df5801.diff                                      1059  B 5176 kBps    00s
Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|--- a/sys/vm/vm_page.c
|+++ b/sys/vm/vm_page.c
--------------------------
Patching file sys/vm/vm_page.c using Plan A...
Hunk #1 succeeded at 3908.
done
Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|--- a/sys/vm/vm_page.c
|+++ b/sys/vm/vm_page.c
--------------------------
Patching file sys/vm/vm_page.c using Plan A...
Hunk #1 succeeded at 3908.
done
3912:	 * Sanitize the range unconditionally.  The KASSERT below is

make: stopped making "buildkernel" in /usr/src

make: stopped making "buildkernel" in /usr/src
make: 1 error