I observed this failure once out of about 10 tests when testing legacy/trac#29541 on commit: ``` commit 5614960e94 (HEAD, tor-github/pr/723/merge) Merge: 69238ca2da 065e7da8e6 ``` Here is the test error: ``` dir/dirserv_read_measured_bandwidths: [forking] FAIL ../src/test/test_dir.c:1802: assert(0 OP_EQ dirserv_read_measured_bandwidths(fname, NULL, bw_file_headers, NULL)): 0 vs -1 [dirserv_read_measured_bandwidths FAILED] ``` It looks like this test was last modified in legacy/trac#26698 in master. Is it an obvious fix? If not, let's see if it happens again.