cyrus imap 2.5.5 build in Linux: problem with unit test, test "badservice" failed

[Sergey]

Hello.

I found what Cyrus IMAP contains unit tests now.
I try it but test failed:

  Test: setentryatt ...passed
  Test: clearentryatt ...passed
Suite: backend
  Test: badhost ...passed
  Test: badservice ...lt-unit: threads.c:342: krb5int_key_register: Assertion `destructors_set[keynum] == 0' failed.
/bin/sh: line 10:   791 Aborted                 $vg ./unit $f
make[3]: *** [check-local] Error 134
lt-unit: threads.c:342: krb5int_key_register: Assertion `destructors_set[keynum] == 0' failed.

Is this a bug of Cyrus IMAP or Is this a bug of my build environment ?

-- 
Regards,
Sergey