11.1-jail on CURRENT: sh: lint: not found *** [llib-lposix.ln] Error code 127

We have a bunch of CURRENT boxes running poudriere jails providing packages for
11.1-RELENG. Since a couple of week sfor now, I face this error when I try to
update the p3 and p4 to the recent p6:

[...]
cc -O2 -pipe
-I/pool/poudriere/jails/11amd64/usr/src/usr.bin/xlint/xlint/../lint1
-DPREFIX=\"\"
-I/pool/poudriere/jails/11amd64/usr/src/usr.bin/xlint/xlint/../arch/amd64
-I/pool/poudriere/jails/11amd64/usr/src/usr.bin/xlint/xlint/../common -DNDEBUG
-std=gnu99 -fstack-protector-strong -Wsystem-headers -Wall -Wno-format-y2k -W
-Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith
-Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow -Wunused-parameter
-Wcast-align -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls
-Wold-style-definition -Wno-pointer-sign -Wmissing-variable-declarations
-Wthread-safety -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable
-Qunused-arguments  -o xlint xlint.o mem.o --- lint.1.gz --- gzip
-cn /pool/poudriere/jails/11amd64/usr/src/usr.bin/xlint/xlint/lint.1 >
lint.1.gz ===> usr.bin/xlint/llib (all) --- llib-lposix.ln --- lint -cghapbx
-Cposix /pool/poudriere/jails/11amd64/usr/src/usr.bin/xlint/llib/llib-lposix
sh: lint: not found *** [llib-lposix.ln] Error code 127
[...]


Please advice how this can be resolved.


Kind regards,

Oliver