something strange after update to 13.0-RELEASE-p8

Hi!

After updating yesterday to p8 I'm getting strange behavior trying to build ports using poudriere. Here an exmaple from build log of shared-mime-info:

FAILED: src/update-mime-database.p/update-mime-database.c.o 
cc -Isrc/update-mime-database.p -Isrc -I../src -I/usr/local/include/glib-2.0 -I/usr/local/lib/glib-2.0/include -I/usr/local/include -I/usr/local/include/libxml2 -fno-color-diagnostics -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -O3 -O2 -pipe -fstack-protector-strong -isystem /usr/local/include -fno-strict-aliasing -isystem /usr/local/include -MD -MQ src/update-mime-database.p/update-mime-database.c.o -MF src/update-mime-database.p/update-mime-database.c.o.d -o src/update-mime-database.p/update-mime-database.c.o -c ../src/update-mime-database.c
In file included from ../src/update-mime-database.c:11:
In file included from /usr/local/include/glib-2.0/glib.h:32:
In file included from /usr/local/include/glib-2.0/glib/gasyncqueue.h:32:
In file included from /usr/local/include/glib-2.0/glib/gthread.h:32:
In file included from /usr/local/include/glib-2.0/glib/gatomic.h:28:
/usr/local/include/glib-2.0/glib/glib-typeof.h:1:1: warning: null character ignored [-Wnull-character]
<U+0000>
^
/usr/local/include/glib-2.0/glib/glib-typeof.h:1:2: warning: null character ignored [-Wnull-character]
<U+0000><U+0000>
        ^
/usr/local/include/glib-2.0/glib/glib-typeof.h:1:3: warning: null character ignored [-Wnull-character]
<U+0000><U+0000><U+0000>
                ^
/usr/local/include/glib-2.0/glib/glib-typeof.h:1:4: warning: null character ignored [-Wnull-character]
<U+0000><U+0000><U+0000><U+0000>
                        ^
/usr/local/include/glib-2.0/glib/glib-typeof.h:1:5: warning: null character ignored [-Wnull-character]
<U+0000><U+0000><U+0000><U+0000><U+0000>

Does anybody know what's wrong? Thanks!