dir/param_voting_lookup unit-test fails when ALL_BUGS_ARE_FATAL is set

It crashes with the following stack trace:

dir/param_voting_lookup: Mar 06 17:40:13.813 [err] tor_assertion_failed_: Bug: src/feature/dirauth/dirvote.c:898: dirvote_get_intermediate_param_value: Assertion (n_found == 0) failed; aborting. (on Tor 0.4.4.0-alpha-dev 1da0b05a5cace6ed)
Mar 06 17:40:13.813 [err] Bug: Tor 0.4.4.0-alpha-dev (git-1da0b05a5cace6ed): Assertion (n_found == 0) failed in dirvote_get_intermediate_param_value at src/feature/dirauth/dirvote.c:898: . Stack trace: (on Tor 0.4.4.0-alpha-dev 1da0b05a5cace6ed)
Mar 06 17:40:13.813 [err] Bug:     0   test                                0x0000000107c0eaec log_backtrace_impl + 60 (on Tor 0.4.4.0-alpha-dev 1da0b05a5cace6ed)
Mar 06 17:40:13.813 [err] Bug:     1   test                                0x0000000107c07adb tor_assertion_failed_ + 699 (on Tor 0.4.4.0-alpha-dev 1da0b05a5cace6ed)
Mar 06 17:40:13.813 [err] Bug:     2   test                                0x00000001079bc70e dirvote_get_intermediate_param_value + 510 (on Tor 0.4.4.0-alpha-dev 1da0b05a5cace6ed)
Mar 06 17:40:13.813 [err] Bug:     3   test                                0x00000001074b17d5 test_dir_param_voting_lookup + 1045 (on Tor 0.4.4.0-alpha-dev 1da0b05a5cace6ed)
Mar 06 17:40:13.813 [err] Bug:     4   test                                0x00000001078ad35a testcase_run_bare_ + 154 (on Tor 0.4.4.0-alpha-dev 1da0b05a5cace6ed)
Mar 06 17:40:13.813 [err] Bug:     5   test                                0x00000001078acee3 testcase_run_one + 355 (on Tor 0.4.4.0-alpha-dev 1da0b05a5cace6ed)
Mar 06 17:40:13.813 [err] Bug:     6   test                                0x00000001078ada7f tinytest_main + 863 (on Tor 0.4.4.0-alpha-dev 1da0b05a5cace6ed)
Mar 06 17:40:13.813 [err] Bug:     7   test                                0x00000001078ac168 main + 1160 (on Tor 0.4.4.0-alpha-dev 1da0b05a5cace6ed)
Mar 06 17:40:13.813 [err] Bug:     8   libdyld.dylib                       0x00007fff6bfc3405 start + 1 (on Tor 0.4.4.0-alpha-dev 1da0b05a5cace6ed)
make: *** [test] Abort trap: 6

Compiled with: ./configure CFLAGS="-DALL_BUGS_ARE_FATAL".