May 31 11:54:46 ci2-netbsd-test-2 postfix/master[476]: fatal: cannot update lock file /var/db/postfix/master.lock: No space left on device

May 31 11:54:47 ci2-netbsd-test-2 postfix/master[558]: fatal: daemon initialization failure

May 31 11:54:48 ci2-netbsd-test-2 postfix/postfix-script[606]: fatal: mail system startup failed

/etc/rc.d/postfix exited with code 1
Starting inetd.
Starting cron.
The following components reported failures:
    /etc/rc.d/postfix
See /var/run/rc.log for more information.
Fri May 31 11:54:49 UTC 2019
Warning: Permanently added '10.128.0.210' (ECDSA) to the list of known hosts.
2019/05/31 11:54:51 fuzzer started
2019/05/31 11:54:51 connecting to host at 10.128.0.105:35091
2019/05/31 11:54:51 checking machine...
2019/05/31 11:54:51 checking revisions...
2019/05/31 11:54:51 testing simple program...
2019/05/31 11:54:52 BUG: program execution failed: executor 0: EOF
open of /dev/kcov failed (errno 2)